* Create capybara test for guest is able to post a resource
sources#index with link
ken/dan:
* guest can click on 'Add a source'
* guest is led to sources#new route
* guest sees form to create a new source
dan/ken:
* set up sources schema
* guest can add source through form
* entry is stored in database
ken/dan:
* Guest sees all sources on the sources#index
dan/ken:
* guest can click on source title to open source url in new tab
ken/dan:
* wrote test to confirm that sources#create route saves an instance of source into the database
Merge pull request #2 from danbender/post-resource

Guests can create instances of Source.