Add pointers to the figure

code/README.md

@@ -34,17 +34,17 @@ The figure shows the SZZ Unleashed workflow, i.e., running three Python scripts
 To get issues one needs a bug tracking system. As an example the project Jenkins uses [JIRA](https://issues.jenkins-ci.org).
 From here it is possible to fetch issues that we then can link to bug fixing commits.
 
-We have provided an example script that can be used to fetch issues from Jenkins issues. In the directory fetch_jira_bugs, one can find the **fetch.py** script. The script has a jql string which is used as a filter to get certain issues. JIRA provides a neat way to test these jql strings directly in the [web page](https://issues.jenkins-ci.org/browse/JENKINS-41020?jql=). Change to the advanced view and then enter the search creiterias. Notice that the jql string is generated in the browsers url bar once enter is hit.
+We have provided an example script that can be used to fetch issues from Jenkins issues (see 1) in the figure). In the directory fetch_jira_bugs, one can find the **fetch.py** script. The script has a jql string which is used as a filter to get certain issues. JIRA provides a neat way to test these jql strings directly in the [web page](https://issues.jenkins-ci.org/browse/JENKINS-41020?jql=). Change to the advanced view and then enter the search creiterias. Notice that the jql string is generated in the browsers url bar once enter is hit.
 
 To fetch issues from Jenkins JIRA, just run:
 ```python
 python fetch.py
 ```
-It creates a directory with issues. These issues will later on be used by the `find_bug_fixes.py` script. Second we need to convert the `git log` output to something that can be processed. That requires a local copy of the repository that we aim to analyze, [Jenkins Core Repository](https://github.com/jenkinsci/jenkins). Onced cloned, one can now run the **git_log_to_array.py** script. The script requires an absolute path to the cloned repository and optionally a SHA-1 for an initial commit.
+It creates a directory with issues (see issues folder in the figure). These issues will later on be used by the `find_bug_fixes.py` script. Second we need to convert the `git log` output to something that can be processed. That requires a local copy of the repository that we aim to analyze, [Jenkins Core Repository](https://github.com/jenkinsci/jenkins). Onced cloned, one can now run the **git_log_to_array.py** script (see 2) in the figure). The script requires an absolute path to the cloned repository and optionally a SHA-1 for an initial commit.
 ```python
 python git_log_to_array.py --repo-path <path_to_local_repo>
 ```
-Once executed, this creates a file `gitlog.json` that can be used together with issues that we created with `fetch.py` script. Now using the `find_bug_fixes.py` and this file, we can get a json file
+Once executed, this creates a file `gitlog.json` that can be used together with issues that we created with `fetch.py` script. Now using the `find_bug_fixes.py` (see 3) in the figure) and this file, we can get a json file
 that contains the Issue and its corresponding commit SHA-1, the commit date, the creation date and the resolution date. Just run:
 ```python
 python find_bug_fixes.py --gitlog <path_to_gitlog_file> --issue-list <path_to_issues_directory>
@@ -69,11 +69,10 @@ Or if the algorithm should be runned without building a jar:
 gradle build && gradle runJar
 ```
 
-The algorithm tries to use as many cores as possible during runtime. The more
-the merrier so to speak.
+The algorithm tries to use as many cores as possible during runtime.
 
 To get the bug introducing commits from a repository using the file produced
-by the previous issue to bug fix commit step, run:
+by the previous issue to bug fix commit step, run (see 4) in the figure):
 
 ```shell
 java -jar szz_find_bug_introducers-<version_number>.jar -i <path_to_issue_list.json> -r <path_to_local_repo>
@@ -81,7 +80,7 @@ java -jar szz_find_bug_introducers-<version_number>.jar -i <path_to_issue_list.j
 
 ## Output
 
-The output can be seen in three different files commits.json,
+As shown in the figure, the output consists of three different files: commits.json,
 annotations.json and fix\_and\_bug\_introducing\_pairs.json.
 
 The commits.json file includes all commits that have been blamed to be bug
@@ -102,7 +101,7 @@ fixes.
 
 ## Use Docker to generate fix_and_bug_introducing_pairs.json. <a name="szz_docker"></a>
 
-There exist a *Dockerfile* in the repository. It contains all the steps in chronological order that is needed to generate the **fix\_and\_bug\_introducing\_pairs.json**. Simply run this command in the directory where the Dockerfile is located:
+There exists a *Dockerfile* in the repository. It contains all the steps in chronological order that is needed to generate the **fix\_and\_bug\_introducing\_pairs.json**. Simply run this command in the directory where the Dockerfile is located:
 
 ```bash
 docker build -t ssz .