Created structure for day 23
Created empty porject
License headers
Removing boilerplate
Add explanation for the emptiness to the storyboard
Added a photo editing extension to the project

This just came straight out of the template project
Add license header
Re-indent
Started creating an interface
Fixed the layout. The slider now looks better :)
Created a new framework to contain the filter
Remove the framework and add the filter code
Can now complete the editing process by writing out the appropriate JPG
This adds adjustment data to allow re-editing the same edit

Well. This should would. But it doesn't. Need to check dev forums to work
out how to fix it :[
Wrote the intro, conclusion and outline of the doc.

Whilst waiting to fix the code :)
Wrote about creating a photo extension
Created a GL Renderer class to facilitate live updates

I reckon that this could be more performant that using UIImageView, but
who really knows?
Might be able to cope with more "continuous" updates
Make the "transparent" part of the GL black
Tidy up spacing