Update install generator to detect application.coffee to fix nil error on install

The install generator currently fails with a nil error 
if an application.coffee exists because its presence is not 
detected from #detect_js_format. Since the asset pipeline handles 
straight .coffee files, we should support this during the install 
generator.
Allow reveal to accept arguments on initialization.
Remove deprecated settings object.
Merge pull request #2157 from chrismccord/master

Fix nil error on rails install generator by detecting application.coffee
Bump version of Reveal to 4.1.2
Merge branch 'master' of github.com:zurb/foundation
bumped version to 4.1.2, updated change log
Merge branch 'master' of github.com:zurb/foundation
Missing colon
Merge pull request #2159 from whardier/master

Missing Colon in _settings.scss for topbar-media-query variable.