grunt-contrib version set.

* 'grunt-contrib-jshint': '~0.10.0'
* 'grunt-contrib-uglify': '~0.5.0'
* 'grunt-contrib-compass': '~0.7.2'
* 'grunt-contrib-cssmin': '~0.10.0'
* "grunt-contrib-watch": "~0.6.0"
Merge pull request #36 from gatespace/grunt-contrib-version

grunt-contrib version set.