Merge branch 'master' into gh-pages

.gitignore

@@ -1,3 +1,4 @@
 _site
 isotope-site.zip
 bower_components/
+node_modules/

CONTRIBUTING.mdown

@@ -1,11 +1,3 @@
-## Development freeze
-
-I've got my hands full working on [Packery](http://metafizzy.co/blog/packery-preview) for the next couple months.
-
-+ :cry: Development on Isotope is stopped for a while
-+ :sleeping: I won't be snappily responding to new issues
-+ :smile: When development starts back up on Isotope, the gains made building Packery will be ported over to Isotope.
-
 ## Submitting issues
 
 ### Read the Help page