Remove restriction on paperclip version
Update paperclip
Add aws-sdk gem for S3 usage
Add .image to event

* Add image paperclip attribute to Event
* Add attr_accessible :image
* Add paperclip matchers
@wip paperclip integration
Add config to prod/dev

* Add paperclip configuration to prod/dev environments
Set image after create

* After Event#create, set image to a placeholder value
Add ImageCompositor

* Call ImageCompositor.new(event).composite for new events
* Stub out ImageCompositor class
@wip End of day thurs
Unit test for ImageCompositor
Install mini_magick
wip installing watermark
Remove unnecessary MagickImage class and spec