Update bower.json to include angular-datepicker

https://github.com/g00fy-/angular-datepicker
Change angular-datepicker version in bower.json

https://github.com/g00fy-/angular-datepicker/
adding uglify-js (v1.3.5) & lessjs (v2.0.0-b3)
fixed bower package name for Less CSS
Update README.md
change less version to 1.7.5
Merge pull request #14 from e6/master

Added to BOWER.JSON --  "angular-datepicker": "1.0.0", "uglify-js": "1.3.5", + "less.js": "1.7.5",