Docs: Write content for each component

[connors]

We need to write content for each component. When / how to use each.

[connors]

Not sure there is much to do here but we need to figure out how we want to handle the phone preview (using gists or not).

Once we nail that down, we can build out the rest of the components in the docs.

[connors]

We also need to add examples for each component above each code snippit.

[dhg]

This is done for almost every single CSS component, but we still need this for JS

[dhg]

Donezo.