Added necessary files for travis-ci integration.
Corrected node.js executable name.
Update README.md

Added information about travis-ci build.
Merge pull request #34 from nathan-osman/master

Added travis-ci integration.
Update README.md

Switched to correct URL for build status image.
Merge pull request #37 from nathan-osman/master

URL for build status image is incorrect.
Merge remote-tracking branch 'upstream/master'
 thats the idea