Move to APP_SUBDIR if exists
Keep track of app_subdir; update default process types
Ignore BUNDLE_GEMFILE
Check base path for Procfile
Detect gems in APP_SUBDIR
Debugging
Create symlinks for base path

Heroku can only run things from the root directory
Remove debugging
Update readme
Merge remote-tracking branch 'upstream/master'

Conflicts:
	bin/compile
	lib/language_pack/base.rb