make cancan check_authorization work

authorize! sets an instance variable in the controller which later can be used to check if authorization was performed
Force binmode - required for Windows based servers/development
Merge pull request #314 from JamieHunter/master

Force binmode - required for Windows based servers/development
Merge pull request #308 from ssendev/patch-1

make cancan check_authorization work
Update ckeditor to 4.2 full version
Add README
Support for Rails 4
Bump version
Fix readme filename
allow to work with Rails 4 production
Merge pull request #338 from Mik-die/md/asset-digest

allow to work with Rails 4 production
Merge remote-tracking branch 'upstream/master'