Change naming for standards

git-svn-id: https://plugins.svn.wordpress.org/instamojo/branches/develop@881903 b8457f37-d9ea-0310-8a92-e5e31aec5664
Minor edits

git-svn-id: https://plugins.svn.wordpress.org/instamojo/branches/develop@881904 b8457f37-d9ea-0310-8a92-e5e31aec5664
Add new options page

git-svn-id: https://plugins.svn.wordpress.org/instamojo/branches/develop@881905 b8457f37-d9ea-0310-8a92-e5e31aec5664
Merge remote-tracking branch 'origin/develop' into develop