Pin zurb-foundation to 3.2.5 for now
gem update:

coffee-script-source to 1.6.1
foursquare2 to 1.9.4
i18n to 0.6.4
jwt to 0.1.7
lastfm to 1.17.0
multipart-post to 1.2.0
tilt to 1.3.4
tzinfo to 0.3.36