Xamarin Component Store

This pull request contains a few things to get Pixate Freestyle more easily built to go into the Xamarin Comonent store (http://components.xamarin.com).

It consists of:
 - Example Android .sln 
 - Example iOS .sln
 - Component Build Script (`build.sh` bash script)
 - Placeholder icons for the store (`PixateFreestyle_512x512.png` and `PixateFreestyle_128x128.png`)
 - Placeholder documentation for the store (`Details.md` and `GettingStarted.md`)
 - Placeholder banner image for the store (`Banner_01.png` - it's possible to have multiple banners...)

You will need to take the following action before this is ready to submit to the store:
 1. Improve the Example solutions if desired
 2. Replace the placeholder icons with real ones (same resolutions)
 3. Replace the banner image placeholder (and add more if desired)
 4. Change `Details.md`.  This is the main document that shows up on the component page.  It should be an overview of the component, with perhaps a very simple code sample and screenshot.  It's not meant to be a full guide, just a quick at a glance about the component
 5. Change `GettingStarted.md`.  This is where you should show how to get running with the component.  You'll need to show the relevant bits for both Android and iOS in this, and it will be a bit shorter than your current documentation since the reference to the PixateFreestyle.dll will have already been done by adding the component

When you're ready (or to test), you can run the `build.sh` script which will produce a `.xam` file.  This is really just a `.zip` file, so you can change the extension to extract it and take a look at how it came together.

Let's start getting this ready for the Component store!