Remove binstubs from gem source.

Binstubs are more of a local dev environment thing now. Removing from the
repo so people are free to choose how they set things up.

Author: cupakromer

.gitignore

@@ -8,3 +8,4 @@ spec/dummy/tmp/
 spec/dummy/.sass-cache
 spec/examples.txt
 Gemfile.lock
+bin/