Added support for put requests and endpoints for updating users
removing avatar upload because it'll require multipart
added examples
Merge pull request #7 from ScotterC/adding-update-endpoints

Added support for put requests and endpoints for updating users
added new upstream API endpoints
Added endpoint for user#show
refactored name so can run current client in parallel
added #username_update
added #email_update
added #toggle_avatar
example for upding the username should use names, not emails
added #update_user