Add travis image to the readme.

This will have a little icon saying if the build passed.
travis icon now goes above title in readme
get rid of line break between title and travis icon
Travis icon now goes after the title
Build status in the README now links to the site.
Merge branch 'develop' into f/readme-travis
Merge pull request #18 from pharpend/f/readme-travis

Add travis icon to the readme