initial commit, fork from hvnteach/rails-tutorial, focus on media handle
start new branch for iss4
iss4: add delete image function
add open Share dialog event for Gallery
fix FB, TW authentication login failure
fix redirect to missing page when login is successful
use group account
add missing button Share
add ui for share image function.
add facebook sharing.
add twitter sharing.
add admin boolean to User model.
add growl notification in Share Event.
gallery edit, delete, upload complete; consider: index or edit for display the newest image
remove ajax event when delete image in demo.gallery.js
Update README.md
ignore the temporary upload folder
commit potential solution for showing images right after they're edited
Merge branch 'master' into iss4