Add first round of testing for member sign-up.

- add form to index.erb for sign-up.
Add login capability, add sign-up capability
Merge branch 'master' into annie-jeff-stopping-place-tuesday

Conflicts:
	Gemfile
	Gemfile.lock
	models/user.rb
	socialnetwork_app.rb
	views/index.erb
Merge confict resolved. Database removed.
Merge pull request #4 from gopher-snakes-2013/annie-jeff-stopping-place-tuesday

merge conflicts resolved