Merge pull request #1 from machineboy2045/master

Added Rule, Brand, and Category resources
Version bump to 0.5.0
version bump--new resources merge
Version bump to 0.5.1
resources support changed and only submit changed attributes on update
Regenerate gemspec for version 0.5.1
Version bump to 0.5.2
Regenerate gemspec for version 0.5.2
backward compatibility with older versions of httparty
Version bump to 0.5.3
Regenerate gemspec for version 0.5.3
Version bump to 0.5.4
removed extra attributes on resource creation
Regenerate gemspec for version 0.5.4