Themes

[shikaan]

I made the following changes:

• *New feature: * You can choose between a couple of themes. Of course other themes can be added;
• *New feature: * You can choose a path variable which is used to append the right style-sheet to the page, so you don't have to change your HTML if you want to change your theme;
• I upgraded and updated the bower and the npm packages, since they were a bit outdated;
• *Tests: * I have written some protractor test (a couple, since I am not able to simulate mouse wheel scrolling in selenium, any help is greatly appreciated) to test the link function
• *Tests: * I added a controller, so I have written tests to... test it out.

I have also updated the README.md file and Gruntfile (I'm more a gulp guy, so probably this gruntfile isn't written at its best)

For any further information you can write me at:
spagnolo.manu@gmail.com