full update css and sign form
add upload picture and comment in picture
Update pictures_controller.rb
Merge pull request #2 from tranquangvu/Enhances/css-and-sign-form

full update css and sign form
fix upload photo and comment
fix upload photo and comment
fix Gemfile
Merge pull request #1 from tranquangvu/Features/Upload-picture-and-comment

add upload picture and comment in picture
firtst upload again