Smartdown in smart answers application
Use Ruby enumerables for body and devolved_body
Documentation for both styles of smart answers

Smartdown in smart answers application

Documentation for both styles of smart answers
Draft and version status, upgrade smartdown to 0.0.4
Move READMEs to their corresponding lib folders
Fix hyphens/underscores in integration README
Rename READMEs
Merge pull request #1049 from alphagov/smartdown

Smartdown in smart answers application