fix(overmind-devtools): fix initial loadup

Author: christianalfoni

packages/node_modules/overmind-devtools/src/components/State/index.tsx

@@ -40,13 +40,13 @@ const ComputedWrapper = ({ children }) => (
 const State: React.SFC<Connect> = ({ app }) => (
   <Wrapper>
     <Inspector
-      value={app.state.currentApp.state}
+      value={app.state.currentApp.state || {}}
       expandedPaths={app.state.expandedStatePaths}
       onToggleExpand={app.actions.toggleExpandState}
       renderPaths={
         Object.assign(
           {},
-          Object.keys(app.state.currentApp.derived).reduce(
+          Object.keys(app.state.currentApp.derived || {}).reduce(
             (aggr, key) =>
               Object.assign(aggr, {
                 [key]: (children) => (
@@ -55,7 +55,7 @@ const State: React.SFC<Connect> = ({ app }) => (
               }),
             {}
           ),
-          Object.keys(app.state.currentApp.computed).reduce(
+          Object.keys(app.state.currentApp.computed || {}).reduce(
             (aggr, key) =>
               Object.assign(aggr, {
                 [key]: (children) => (