Fix primary plugin file

git-svn-id: https://plugins.svn.wordpress.org/instamojo/trunk@883569 b8457f37-d9ea-0310-8a92-e5e31aec5664
Update Instamojo API Wrapper

git-svn-id: https://plugins.svn.wordpress.org/instamojo/trunk@883571 b8457f37-d9ea-0310-8a92-e5e31aec5664