add Flat theme
gitignore
add credits
update author
It became 'Flatness' and also flatter!

* Change name to 'Flatness'
* Removes overides on buttons and they are now addes in variables.less
* Button and Navbar get new look
* Small and mini buttons getting smaller font
* fixed duplicate icons issue
* Overall font size increased
* Alerts styles improved
Merge pull request #96 from jenil27/gh-pages

New theme - Flat