Use the mobile-launch-screen package in todos

The example doesn't "flash" with the white page on mobile when launched.

examples/todos/client/launchScreenConf.js

@@ -0,0 +1,4 @@
+if (Meteor.isCordova) {
+  LaunchScreen.controlManually = true;
+}
+

examples/todos/lib/router.js

@@ -31,6 +31,11 @@ Router.map(function() {
     },
     data: function() {
       return Lists.findOne(this.params._id);
+    },
+    action: function () {
+      this.render();
+      if (Meteor.isCordova)
+        LaunchScreen.hide();
     }
   });
   
@@ -45,4 +50,4 @@ Router.map(function() {
 if (Meteor.isClient) {
   Router.onBeforeAction('loading', {except: ['join', 'signin']});
   Router.onBeforeAction('dataNotFound', {except: ['join', 'signin']});
-}
+}