Adds a route to signout using GET
Adds a route to signout using GET

atomicjolt/react_rails_starter_app,atomicjolt/react_rails_starter_app,atomicjolt/react_starter_app,atomicjolt/lti_starter_app,atomicjolt/react_starter_app,atomicjolt/adhesion,atomicjolt/lti_starter_app,atomicjolt/adhesion,atomicjolt/react_rails_starter_app,atomicjolt/react_rails_starter_app,atomicjolt/lti_starter_app,atomicjolt/lti_starter_app,atomicjolt/adhesion,atomicjolt/react_starter_app,atomicjolt/react_starter_app,atomicjolt/adhesion