Update the jira integration doc.

doc/integration/jira.md

@@ -15,7 +15,7 @@ For example, let's create user `gitlab`. We've also added `gitlab` user to group
 In `gitlab.yml` enable [JIRA issue tracker section by uncommenting the lines](https://gitlab.com/subscribers/gitlab-ee/blob/6-8-stable-ee/config/gitlab.yml.example#L111-115).
 This will make sure that all issues within GitLab are pointing to the JIRA issue tracker.
 
-We can also enable JIRA service that will allow us to interact with JIRA issues. 
+We can also enable JIRA service that will allow us to interact with JIRA issues.
 
 For example, we can close issues in JIRA by a commit in GitLab.
 
@@ -25,14 +25,17 @@ Go to project settings page and fill in the project name for the JIRA project:
 
 Next, go to the services page and find JIRA.
 
+![Jira services page](jira_service.png)
+
 1. Tick the active check box to enable the service.
 1. Supply the url to JIRA server, for example http://jira.sample
 1. Supply the username of a user we created under `Configuring JIRA` section, for example `gitlab`
 1. Supply the password of the user
-1. Optional: supply the JIRA api version, default is version 2
+1. Optional: supply the JIRA api version, default is version
+1. Optional: supply the JIRA issue transition ID (issue transition to closed). This is dependant on JIRA settings, default is 2
 1. Save
 
-Now we should be able to interact with JIRA issues, for example we can close a JIRA issue by commiting to our GitLab repository and referencing the JIRA issue( in the format of JIRAPROJECT-123). 
+Now we should be able to interact with JIRA issues, for example we can close a JIRA issue by commiting to our GitLab repository and referencing the JIRA issue( in the format of JIRAPROJECT-123).
 
 For example, for project named NEW we commit with a commit message `Add new file fixes NEW-1`: