Add phantomcss dependency.
Initial PhantomCSS test suite.
Merge branch 'improve-dir-structure' into phantomcss
Align phantomcss test suite with new dir structure.
One screenshot per test case, with better file names.
Ignore visual diffs.
Add grunt task to run visual regression tests.
Automate running regression over all visual tests.
Organize captured screenshots.
Show command-line info while running regression tests.
Add cli option to run all tests or only one.
Begin test suite cleanup.
Add option to run all tests with log-level specified.
Improve Gruntfile comments.
By default, ensure tests provide feedback while running.
Ignore diff and fail screen caps.
Make paths more robust, split test into parts.
Add first draft of installation and usage to readme.
Second draft of readme.
Add Sass and Autoprefixer tasks before we run PhantomCSS tests