expose context consumer and provider

This will allow third party apps to use these in their code

Author: cellog

src/index.js

@@ -1,5 +1,6 @@
 import Provider from './components/Provider'
 import connectAdvanced from './components/connectAdvanced'
+import { Provider as ReduxContextProvider, Consumer as ReduxContextConsumer } from './components/Context'
 import connect from './connect/connect'
 
-export { Provider, connectAdvanced, connect }
+export { Provider, connectAdvanced, ReduxContextConsumer, ReduxContextProvider, connect }