Added FontAwesomeIconFactory (pod)

FontAwesome has all the icons we'll ever need for prototype UI stuff.  Being able to draw straight out of the OTF font sounds wonderful, and like a solved problem.  And so it is.
Switched the Drawer handle over to use Font Awesome's cog

Switched from using the SettingsIcon png to a runtime-generated Font Awesome icon-cog image by way of NIKFontAwesomeIconFactory.

Also, decided to get a little creative with the color (“little” is the key word— instead of white it has a fill and stroke with shades/fades of grays).
Removed the SettingsIcon PNG files

They're no longer needed.
Fixed a couple of memory issues.

Yeah, oops.
Merge in branch 'feature/options-drawer'
Switched to “release-into” syntax

Switched from `[a = b release]` syntax to `[(a = b) release]`.  Considering this is (unfortunately) not a common paradigm in Obj-C, it can be a little difficult to figure out what's going on at first glance.  Explicit grouping parentheses (matching the natural order of operations) make this operation I call “release-into” or “assign-release” much clearer.

In the spirit of putting memory management operations at the most relevant point, also moved one autorelease from the alloc/init to the return statement for the method.