github/gitignore — pull request #585 by Jiri-Kremser (2013-03-14 22:32:57+00:00)
Title: Adding 4 directories generated by GWT compiler.

First three entries are based on http://stackoverflow.com/questions/8109410/gwt-hgignore-gitignore-entries. The last one makes sense for GWT 1.5.x and lower.