Beautify README format

README.md

@@ -29,95 +29,128 @@ Follow the instructions in the [linux-sgx-driver](https://github.com/01org/linux
 Build the Intel(R) SGX SDK and Intel(R) SGX PSW Package
 -------------------------------------------------------
 ###Prerequisites:
-- Ensure that you have the following required operating systems:
+- Ensure that you have the following required operating systems:  
   Ubuntu\*-14.04-LTS 64bits
-- Use the following command to install the required tools to build Intel(R) SGX SDK:
-  `$ sudo apt-get install build-essential ocaml automake autoconf libtool`
-- Use the following command to install additional required tools to build Intel(R) SGX PSW:
-  `$ sudo apt-get install libcurl4-openssl-dev protobuf-compiler protobuf-c-compiler libprotobuf-dev libprotobuf-c0-dev`
-- Use the script *download_prebuilt.sh* inside source code package to download prebuilt binaries to prebuilt folder
-  You may need set http proxy for wget tool used by the script (such as `export http_proxy=http://test-proxy:test-port`)
-  `$ ./download_prebuilt.sh`
+- Use the following command to install the required tools to build Intel(R) SGX SDK:  
+```
+  $ sudo apt-get install build-essential ocaml automake autoconf libtool
+```
+- Use the following command to install additional required tools to build Intel(R) SGX PSW:  
+```
+  $ sudo apt-get install libcurl4-openssl-dev protobuf-compiler protobuf-c-compiler libprotobuf-dev libprotobuf-c0-dev
+```
+- Use the script `download_prebuilt.sh` inside source code package to download prebuilt binaries to prebuilt folder  
+  You may need set http proxy for wget tool used by the script (such as `export http_proxy=http://test-proxy:test-port`)  
+```
+  $ ./download_prebuilt.sh
+```
 
 ###Build the Intel(R) SGX SDK and Intel(R) SGX PSW
-The following steps describe how to build the Intel SGX SDK and PSW. You can build the project according to your requirement.
-1. To build both Intel SGX SDK and PSW with default configuration, enter the following command:
-   `$ make`
-   You can find the tools and libraries generated in the `build/linux` directory.
-   Note: You can also go to the sdk folder and use the `make` command to build the Intel SGX SDK component only. However, the building of PSW component is dependent on the building result of Intel SGX SDK.
-2. To build Intel SGX SDK and PSW with debug information, enter the following command:
-   `$ make DEBUG=1`
-3. To clean the files generated by previous `make` command, enter the following command:
-   `$ make clean`
+The following steps describe how to build the Intel SGX SDK and PSW. You can build the project according to your requirement.  
+- To build both Intel SGX SDK and PSW with default configuration, enter the following command:  
+  You can find the tools and libraries generated in the `build/linux` directory.  
+  **Note**: You can also go to the sdk folder and use the `make` command to build the Intel SGX SDK component only. However, the building of PSW component is dependent on the building result of Intel SGX SDK.  
+```
+  $ make  
+```  
+
+- To build Intel SGX SDK and PSW with debug information, enter the following command:  
+```
+  $ make DEBUG=1
+```
+- To clean the files generated by previous `make` command, enter the following command:  
+```
+  $ make clean
+```
 
 ###Build Intel(R) SGX SDK Installer
 To build Intel(R) SGX SDK installer, enter the following command:
-    `$ make sdk_install_pkg`
+```
+$ make sdk_install_pkg
+```
 You can find the generated Intel SGX SDK installer `sgx_linux_x64_sdk_${version}.bin` located under `linux/installer/bin/`, where `${version}` refers to the version number.
 
 ###Build Intel(R) SGX PSW Installer
 To build Intel(R) SGX PSW installer, enter the following command:
-    `$ make psw_install_pkg`
+```
+$ make psw_install_pkg
+```
 You can find the generated Intel SGX PSW installer `sgx_linux_x64_psw_${version}.bin` located under `linux/installer/bin/`, where `${version}` refers to the version number.
 
 Install Intel(R) SGX SDK
 ------------------------
 ###Prerequisites
-- Ensure that you have the following required operating systems:
+- Ensure that you have the following required operating systems:  
   Ubuntu\*-14.04-LTS
 - Use the following command to install the required tool to use Intel(R) SGX SDK:
-  `$ sudo apt-get install build-essential`
+```  
+  $ sudo apt-get install build-essential
+```
 
 ###Install Intel(R) SGX SDK
 To install Intel(R) SGX SDK, execute the installer with root privilege:
-    `$ sudo ./sgx_linux_x64_sdk_${version}.bin `
-
+```
+$ cd linux/installer/bin
+$ sudo ./sgx_linux_x64_sdk_${version}.bin `
+```
 ###Test Intel(R) SGX SDK Package with the Sample Codes
-1. Copy the sample codes installed by Intel(R) SGX SDK package into your work folder, such as
-   `$ cp -r /opt/intel/sgxsdk/SampleCode ~`
-2. Compile and run each sample codes in the simulation mode to make sure the package works well.
-   `$ cd SampleCode/LocalAttestation`
-   `$ make`
-   `$ ./app`
+- Copy the sample codes installed by Intel(R) SGX SDK package into your work folder, such as  
+```
+  $ cp -r /opt/intel/sgxsdk/SampleCode ~
+```
+- Compile and run each sample codes in the simulation mode to make sure the package works well.  
+```
+  $ cd SampleCode/LocalAttestation
+  $ make
+  $ ./app
+```
    Use similar commands for other sample codes.
 
 ###Compile and Run the Sample Codes in the Hardware Mode
 If you use an SGX hardware enabled machine, you need to run the sample codes in the hardware mode.
-Ensure that you install SGX driver and Intel(R) SGX PSW installer on the machine.
+Ensure that you install SGX driver and Intel(R) SGX PSW installer on the machine.  
 See the topic, Install Intel(R) SGX PSW, on how to install the PSW package.
-1. Copy the sample codes installed by the Intel(R) SGX SDK package into your work folder, such as
-   `$ cp -r /opt/intel/sgxsdk/SampleCode ~`
-2. Compile and run each sample codes in the debug mode.
-   `$ cd SampleCode/LocalAttestation`
-   `$ make SGX_MODE=HW SGX_DEBUG=1`
-   `$ ./app`
+- Copy the sample codes installed by the Intel(R) SGX SDK package into your work folder, such as  
+```
+  $ cp -r /opt/intel/sgxsdk/SampleCode ~
+```
+- Compile and run each sample codes in the debug mode.  
+```
+  $ cd SampleCode/LocalAttestation
+  $ make SGX_MODE=HW SGX_DEBUG=1
+  $ ./app
+```
    Use similar commands for other sample codes.
 
 Install Intel(R) SGX PSW
 ------------------------
 ###Prerequisites
-- Ensure that you have the following required operating systems:
+- Ensure that you have the following required operating systems:  
   Ubuntu\*-14.04-LTS 64bits
-- Ensure that you have the following required hardware:
+- Ensure that you have the following required hardware:  
   6th Generation Intel(R) Core(TM) Processor (code named Skylake)
-- Configure the system with the **SGX hardware enabled** option and install SGX driver in advance.
+- Configure the system with the **SGX hardware enabled** option and install SGX driver in advance.  
   See the topic, Build and Install the Intel(R) SGX Driver, on how to install the SGX driver.
-- Install the library using the following command:
-  `$ sudo apt-get install libcurl4-openssl-dev libprotobuf-dev libprotobuf-c0-dev`
+- Install the library using the following command:  
+```
+  $ sudo apt-get install libcurl4-openssl-dev libprotobuf-dev libprotobuf-c0-dev`
+```
 
 ###Install Intel(R) SGX PSW
-To install Intel(R) SGX PSW, execute the installer with root privilege:
-    `$ sudo ./sgx_linux_x64_psw_${version}.bin`
+To install Intel(R) SGX PSW, execute the installer with root privilege:  
+```
+$ cd linux/installer/bin
+$ sudo ./sgx_linux_x64_psw_${version}.bin`
+```
 
 ###Start or Stop aesmd Service
-The Intel(R) SGX PSW installer installs an aesmd service in your machine which is running in a special linux account aesmd.
-To stop the service: `$ sudo service aesmd stop`
-To start the service: `$ sudo service aesmd start`
+The Intel(R) SGX PSW installer installs an aesmd service in your machine which is running in a special linux account aesmd.  
+To stop the service: `$ sudo service aesmd stop`  
+To start the service: `$ sudo service aesmd start`  
 To restart the service: `$ sudo service aesmd restart`
 
 ###Configure the Proxy for aesmd Service
-The aesmd service uses HTTP protocol to initialize some services.
-If proxy is required for HTTP protocol, you may need manually setup the proxy for aesmd service.
-You should manually edit file `/etc/aesmd.conf` (refer the comment in the file) to set the proxy for aesmd service.
+The aesmd service uses HTTP protocol to initialize some services.  
+If proxy is required for HTTP protocol, you may need manually setup the proxy for aesmd service.  
+You should manually edit file `/etc/aesmd.conf` (refer the comment in the file) to set the proxy for aesmd service.  
 After you configure the proxy, you need to restart the service to enable the proxy.
-