added phantomcss
deleted other copy of casperjs, use project-wide one instead
increase allowed failure percentage to 1%
Merge remote-tracking branch 'upstream/master' into phantomcss
try hiding footer to resolve height issues and updated baseline images
Merge remote-tracking branch 'upstream/master' into phantomcss
new baseline pics
Merge remote-tracking branch 'upstream/master' into phantomcss
new baseline images
added runner script
pulled out method and updated readme
Merge pull request #1242 from guardian/phantomcss

Phantom CSS screenshot comparison