Merge pull request #10 from andrewhao/master

Don't test node 0.8
Refactoring some more tests.
Merge pull request #11 from andrewhao/more-tests

Refactoring some more tests.
Refactored the ImageTwiddler into smaller callback components. Added environment variable support to turn on or off the printer.
Merge pull request #12 from porkbuns/printer-env

Refactored the ImageTwiddler into smaller callback components. Added env...
#4 Fixing issue where iOS would freeze due to bad value in apple header meta tag.
Merge pull request #13 from andrewhao/no-more-ios-freezes

#4 Fixing issue where iOS would freeze due to bad value in apple header ...
Merge pull request #7 from porkbuns/master

Sync master