Create writeup template and add thumbnail
Create single-page app for demoing the CoreImage detectors
Add license to head of files
Remove boilerplate
Add a video display which routes the camera through CoreImage

No detectors or anything yet
Rectangle detection now works :) yay
A spot of refactoring

All the CoreImage guff is in it's own class so that the detection code
is all in a short view controller class
Add the ability to detect QR codes as well as rectangles. Project done!
Completed(?) the write up about new CoreImage detectors
Add screenshot images
Rescale images for blog post
Update UIVisualEffectView code to work in β5
Update storyboard for β5
Merge branch 'days/13-coreimage-detectors'