Behold a global spinner

Created a spinner component with an absolute position. Can use separately or call the global instance. Can also use the spinner "react-spinner" by itself if desired.
Right now, only shows the spinner without altering the background

![image](https://cloud.githubusercontent.com/assets/4157103/4942423/dff3d2c2-65eb-11e4-9d40-f6df3b8d59d0.png)


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Spinner is a React class *Descriptor* (since 0.11 I believe), I'm not sure how it handles (if at all) the proxying of new properties and methods to the "real" React class. I guess the static nature of it all makes this a non-concern here however, as these methods/properties are never accessed from within.