Merge remote-tracking branch 'origin/master' into user_avatars

Conflicts:
	db/schema.rb
Remove commented out methods
Add gravatar image for user if user is logged in to nav bar
Add repository title to the top of the repository show table
Take the curl command to list a users repos and move it into the GithubHelper module. Call helper method, "fetch_gh_repos" in the controller.
Include GithubHelper in the repo controller, and call fetch_gh_repos within index action
Refactor GithubHelper:
-Add constants to handle base URI and API Keys
-Refactor fetch_gh as base method for additional helper, includes URI and API Constant and calls curl command
-Add method to fetch user repos
-Add method to fetch contributors to a repo
-Add method to fetch contributor avatars for use in the view
Refactor the repo index to match the GithubHelper refactoring
Add instance variable in the show method which is a list of contributors to use as links with their avatars
Add variable to hold avatar urls for users to be dispayed on the repositories show table
Add method to pull emails from repo contributers
-combine this with the get avatar method to return the appropriate avatars for the file path lines they are associated with.
Add @contributors --> will display usernames in the view
Currently blocked on avatar display in view, for the time being these methods will work to pull down usernames for contributors
Spacing.
Merge pull request #60 from alexung/alex_save_button

Alex save button
Waiting to hear back about how to proceed with user images
Merge remote-tracking branch 'origin/master' into refactor_repo_cont_index

Conflicts:
	Gemfile
	app/controllers/repositories_controller.rb
	app/helpers/github_helper.rb
	app/views/repositories/show.html.erb
Merge pull request #61 from alexung/contributor_avatars

Contributor avatars
Create notes controller, model, and migration
Edit the text field in notes to content. Create associations in model