Created challenges#new view, challenges controller.  Posting correctly is untested
Create challenge now working, index shows last 20 challenges created... can be changed in the future for specific user
Created challege#show
Added wirble to gemfile, created edit page for challenges.
Added links to challenges#index for challenges#show
Working edit page, quiet assets gem, links from show and edit back to challenges.  Link from show to edit
Working edit page, quiet assets gem, links from show and edit back to challenges.  Link from show to edit