Added alias for $Plugin->pluginFile to reference $Plugin->coreFile
Merge branch 'master' of git://github.com/CubicMushroom/wordpress-plugin

* 'master' of git://github.com/CubicMushroom/wordpress-plugin:
  (undone) Removed use of namespaces to make compatible with PHP 5.2.
  Corrected Main Plugin files class description as not updated when copied in.
  Removed repos as files now on Packagist.

Re-added the namespaces as PHP 5.2 out of support