changed image and text in running_out_of_joke page
added image validation to joke model and added a pretend_to_have_joke page
modified the joke model image validation from acceptance to presence
added view all jokes button and style navbar buttons
added application name in navbar
include minimagick in carrierwaive
uploaded image would be scaled to be no larger than 1100 by 1100 pixels
deleted uploaded images and added uploads folder to git ingore file
Merge pull request #7 from AeroWong/master

Joke.ready without github login feature