Adds basic properties on OCAtlassianInstance
Adds project and issue type's properties
Creates connection class (OCInstanceConnector) and composites OCAtlassianInstance with it
Sends create issue data via POST to user's Jira instance
Adds 'Instance.plist' file to configure a Jira instance
Loads instance data from configuration file (Instance.plist)
Merge branch 'feature/simple_client_to_jira_instance' into develop