Added 211-elements-details.
Added 212-ufo-details
Bug fixes in 211-elements-details.
Added 213-cities-details
Added exercise 214.
Added 216-routes-practice
Added 215-team-rosters
New version of sinatra-footnotes with static file bug fix.
Merge branch 'master' of github.com:davincicoders/2013-q4-ruby
Fix non-ASCII character.
Merge branch 'master' of github.com:davincicoders/2013-q4-ruby
Day 6: Exercise #3 in 216 (routes)
Day 6: Exercise #4 in 211 (index/detail)
Day 6: Exercise #5 in 212 (index/detail)
Day 6: Exercise #6 in 213 (city index/detail)