Fixing the "usage" example as it's wrong

[etiago]

The usage example has a mistake and makes it so that when people do copy/paste, they end up with a wrong example.

[cjohansen]

You need both namespaces - get-mui-theme resides in cljs-react-material-ui.core

[madvas]

This is not really correct. Usage with reagent is lower. To improve readability we can probably rename first "Usage" to "Usage with Om" and make "Using with Reagent" header bigger

[cjohansen]

Wow, I completely overlooked that as well :( Suggestion: a table of contents on the top, to bring people's attention to the fact that there are multiple guides for setup.