updating README to reflect new repo location
Changing language to Twetter and Twet
adding Author links
Generates Users controller, sets routes for #view
Adds Users#show
Sets User#show to /user/:id
Converts only @self to URL
Fixes regex capture to work on all @usernames in Twet.content
Updates User#show
adds mention_to_link helper method
Replaces mentions with links
Subs links on @mentions
Adds @ back into created links
Adds twets to User#show
Adds gravatar to left_nav via helper
Changes gravatar size
Fixes gravatar size