Export config from index.ts

Gives error: `Attempted import error: 'config' is not exported from './overmind'.`

Author: schabluk

packages/overmind-website/examples/guide/getstarted/connectapp.ts

@@ -8,7 +8,7 @@ import { state } from './state'
 import * as actions from './actions'
 import * as effects from './effects'
 
-const config = {
+export const config = {
   state,
   actions,
   effects
@@ -106,7 +106,7 @@ import { state } from './state'
 import * as actions from './actions'
 import * as effects from './effects'
 
-const config = {
+export const config = {
   state,
   actions,
   effects