Make all node-dependences installed local
Build via grunt
Generating extensions from templates. DRY to meta info
Fixing binary files corruption issue (https://github.com/outaTiME/grunt-replace/issues/36).

Change `grunt-replace` to self-hosting `grunt-contrib-copy` solution.
Update README.md to reflect changes
Add directory for storing keyfiles
Add chrome deploy to zip

If there is no key file present, then deploy chrome extension to a zip
file for chrome apps store
(http://developer.chrome.com/extensions/packaging.html)