Initial commit

Added requirements to README
Installing grunt-cli for Travis
Broke out createDiff function
Renamed screenshot to image and completed documentation
Moved to callback with result outcome
Added lint to test script
Moved to get-pixels and asserting images nicely
Added image assertion but it is off
Added different.png to expected files
Filled out basic tests
Added test images
Starting to write out tests
Renaming utility
Added original image-diff code
Fixed up .travis.yml install script
Corrected install script permissions
Added .travis.yml
Added Travis CI badge
Initial commit