Add basic about page and use layout.erb
Add spec for GET /about
Add basic description of requested scopes
Remove unnecessary empty lines in spec
Fix About page copy
Add footer to link to Home and About pages
Replace /about with /how
Fix JS error in the case that Handlebars templates don't exist
Use How view before authorising if not authorised
Use an encrypted session cookie
Suppress Rack security warning when running specs
Include 'How does this work?' link in footer when authenticated
Apply s/authorise/authorize to copy
Use appropriate footer link on How page
Merge pull request #11 from jdennes/how-does-this-work

Add "How does this work?" page