point users to gravatar to update their profile pic
sign out users with http DELETE
Merge pull request #137 from DefactoSoftware/bug/sign-out-on-edit-profile

sign out users with http DELETE
Merge pull request #134 from DefactoSoftware/add-gravatar-link

point users to gravatar to update their profile pic
update devise
Merge pull request #138 from DefactoSoftware/bug/sign-out-on-edit-profile

update devise