update flutter start to run

assets-and-images.md

@@ -149,4 +149,4 @@ Some caveats:
 You can see an example
 ([examples/widgets.dart](https://github.com/flutter/flutter/tree/master/examples/widgets))
 from the flutter repo.
-Run `flutter start -t resolution_awareness.dart` to see it in action.
+Run `flutter run -t resolution_awareness.dart` to see it in action.

debugging.md

@@ -73,7 +73,7 @@ the output to a level that avoids being dropped by Android's kernel.
 
 During development, you are highly encouraged to use Dart's "checked"
 mode, sometimes referred to as "debug" mode. This is the default if
-you use `flutter start`. In this mode, the Dart `assert` statement is
+you use `flutter run`. In this mode, the Dart `assert` statement is
 enabled, and the Flutter framework uses this to perform many runtime
 checks verifying that invariants aren't being violated.
 
@@ -82,7 +82,7 @@ some context information to help with tracking down the source of the
 problem.
 
 To turn off checked mode, and use release mode, run your application
-using `flutter start --no-checked`.
+using `flutter run --no-checked`.
 
 ## Dumping the application state
 
@@ -129,7 +129,7 @@ class AppHome extends StatelessComponent {
 
 ...will output something like this (the precise details will vary on
 the version of the framework, the size of the device, and so forth):
- 
+
 
 ```
 android: I/flutter : WidgetFlutterBinding - CHECKED MODE
@@ -221,7 +221,7 @@ callback](http://docs.flutter.io/flutter/scheduler/Scheduler/addPersistentFrameC
 or an event handler is the best solution.
 
 To call `debugDumpRenderTree()`, you need to add `import
-'package:flutter/rendering.dart';` to your source file. 
+'package:flutter/rendering.dart';` to your source file.
 
 The output for the tiny example above would look something like this:
 

faq.md

@@ -271,7 +271,7 @@ In development, Flutter apps run with a type checking and asserts enabled by
 default. These checks help you catch errors early during development but impose
 a runtime cost.  The "slow mode" banner indicates that these checks are enabled.
 You can run your app without these checks by passing the `--no-checked` flag to
-`flutter start`.
+`flutter run`.
 
 ## Where can I get support?
 

getting-started.md

@@ -94,8 +94,8 @@ you want Flutter to use a different installation of the Android SDK, you must se
 
 ## Running a Flutter application on Android
 
-You can use the `flutter start` command to run your Flutter app on all connected
-devices and simulators.  `flutter list` will list connected devices and
+You can use the `flutter run` command to run your Flutter app on all connected
+devices and simulators.  `flutter devices` will list connected devices and
 simulators.
 
 First, change directories to the root of your app (the same directory that
@@ -104,7 +104,7 @@ contains the `pubspec.yaml` file for your project).
 To start your app, run:
 
 ```
-$ flutter start
+$ flutter run
 ```
 
 If everything works, you should see your starter app
@@ -149,12 +149,10 @@ We currently only support iOS development with the iOS simulator,
 but you can deploy Flutter apps to iOS devices.
 
 - Run `Simulator.app`
-  - You can find Simulator.app in
-_Applications/Xcode/Contents/Developer/Applications_ or via _Spotlight_
-  - To ensure your simulator uses a device type of iPhone 5 or above,
-check the Simulator.app's `Hardware -> Device` menu.
-- Run `flutter start` from your app's directory.
-  - This command detects the iOS simulator and starts the app.
+  - You can find Simulator.app in _Applications/Xcode/Contents/Developer/Applications_ or via _Spotlight_
+  - Ensure your simulator is using a 64-bit device (iPhone 5s or later) by checking the Simulator.app's `Hardware -> Device` menu
+- Run `flutter run` from your app's directory
+  - This command detects the iOS simulator and starts the app
 
 ## Getting Started with the Atom editor