attempted nested forms
When a User can now click 'add a plant; from the garden show page and a modal pops up for them to add a plant to their garden.
user can now navigate to 'My Gardens' from menu navbar
added heroku
removed cocoon gem from the app
Merge branch 'master' of github.com:emmagard/solgarden into garden_new_create_destroy

Conflicts:
	app/assets/stylesheets/application.css
	app/views/layouts/_navbar.html.erb
Merge pull request #19 from emmagard/garden_new_create_destroy

Garden new create destroy