Added first Integration methods

Bug fix, changing POST data attribute keys to underscores

Added new Feed Key method

Bug fix and new find branches/tags methods

Fixed DELETE requests

Created find_changeset_diffs()

Created find_all_repository_releases(), store last curl request info …

…in object and docs update

Big update - added new Repository Import and Invitation methods, adde…

…d color_label attribute to Server Environment methods, made API completely compatible with new JSON communication method

Docs tweak

Modified find_all_releases() to accomodate new API method of finding …

…all releases for account