Rails Generators and convenient Spine.Controller extensions

[dnagir]

This is pretty large pull request.

But the most notable things are:

• we got README :)
• it has generators for model, controllers, views or all of them at once (resource generator)
• views are plain simple, but can generate hamljs, eco or ejs templates (automatically, depending on the app gems)
• app.js.coffee extends Spine.Controller with convenience method to render views: @render 'show', post
• the directory structure is NOT in the app/assets/javascripts/app/{models,views,controllers}, but rather in app/assets/javascripts/{models,views,controllers} (that app/.../app freaks me out).

Hope to get this merged in.

It will not break anything (I promise!), so just rake release after merge :)

Cheers.

[maccman]

Looking good - awesome! Can you pop on IRC to discuss some things?