Change owner, add ST3 for BlockCursorEverywhere

- @ingshtrom doesn't want to support the plugin anymore, so changing this to my fork https://github.com/ingshtrom/BlockCursorEverywhere/pull/8#issuecomment-62320456
- This plugin supports Sublime Text 3
Merge pull request #3808 from karlhorky/patch-1

Change owner, add ST3 for BlockCursorEverywhere