Fix the index.html page

- Changed PistonDevelopers.github.io to just Piston in the titles (which is more readable)
- Updated the site description to reflect the main piston repo's description
- Fixed the indentation on the main content section
Updated README file

Fixed the README title and added links to the website and source code.
Merge pull request #15 from Apointos/patch-1

General website fixes
Fixed indentation

Fixed the indentation of the home page source code.
Merge pull request #16 from Apointos/patch-2

Fixed indentation
Updated example with absolute coordinates
Merge pull request #18 from bvssvni/master

Updated example with absolute coordinates
Updated docs
Updated docs
Merge pull request #19 from bvssvni/master

Updated docs