Removes fuel casset package folder and files
Changes fuel casset package to be a submodule
Merge pull request #14 from dmyers/casset-submodule

Changes casset package to be a submodule.
Removes fuel authorizenet package folder and files
Changes fuel authorizenet package to be a submodule
Moves contributing out of readme into file recognized by github issues
Merge pull request #17 from dmyers/contributing

Moves contributing out of readme into a separate file recognized by github issues.
Add composer.phar to the list of files to not track.
Adds authorizenet config to disable defining constants to be manually set
Merge pull request #16 from dmyers/authorizenet-submodule

Changes authorizenet package to be a submodule.