Bump Version

increment version to 0.3 and remove a trailing whitespace

The version of editorconfig-emacs on marmalade-repo.org is 0.2, but it is out of date (lacks haskell, js2-mode support).

A new version should be pushed to marmalade-repo.org after the version number is updated; it may be necessary to get the credentials to do that from @xuhdev (http://marmalade-repo.org/packages/editorconfig)