Update to 1.5

git-svn-id: https://plugins.svn.wordpress.org/dx-plugin-base/trunk@1010088 b8457f37-d9ea-0310-8a92-e5e31aec5664
Update readme

git-svn-id: https://plugins.svn.wordpress.org/dx-plugin-base/trunk@1010090 b8457f37-d9ea-0310-8a92-e5e31aec5664
Officially bump up the version in readme

git-svn-id: https://plugins.svn.wordpress.org/dx-plugin-base/trunk@1010091 b8457f37-d9ea-0310-8a92-e5e31aec5664