Merge pull request #72 from elgreco84/master

Error handling for delete api endpoints
Fix path to fetch groups for user
Merge pull request #73 from nlambson/master

Fix path to fetch groups for user
Add support for enrollments on user within context of course

When using an API to list users in a course, user objects will
have an enrollments property.
Merge remote-tracking branch 'instructure/CanvasKit/master'
Merge pull request #74 from jarsen/master

Add enrollments for course to CKIUser
added the ability to create a new folder
Merge remote-tracking branch 'instructure/CanvasKit/master'