fix phantomjssmith for node 0.11

actual fix: https://github.com/vesln/temporary/commit/f9fc8cb5f6f8bfc7bfcc868e5102033e1a6e6305
Release 0.4.1
Merge remote-tracking branch 'origin/master' into pr/6
Release 0.4.2
Upgraded to latest spritesmith-engine-test
Removed dependency on in-repo expected images
Release 0.4.3
Corrected typo in assert message
Release 0.4.4
Updated .travis.yml to fix `node@0.8` testing issues
Release 0.4.5
Transitioning to mocha
Fixed invocation
Porting over remainder of content
Added assertions
Completed first custom test case
Completed conversion of phantomjssmith tests
Corrected external dependency names
Fixed context mishap
Moved to fixed version