Update DevelopmentSetupAndroid.md

Summary:Emulator in Android Studio 2.0 introduced new shortcut for hardware menu button.
Closes facebook#6923

Differential Revision: D3168434

fb-gh-sync-id: 7b73146003ae1d2191536796ea0fd50840ef5bec
fbshipit-source-id: 7b73146003ae1d2191536796ea0fd50840ef5bec

docs/DevelopmentSetupAndroid.md

@@ -78,7 +78,8 @@ Genymotion is much easier to set up than stock Google emulators. However, it's o
   1. Run `android avd` and click on **Create...**
   ![Create AVD dialog](img/CreateAVD.png)
   2. With the new AVD selected, click `Start...`
-5. To bring up the developer menu press F2 (or install [Frappé](http://getfrappe.com))
+5. To bring up the developer menu press F2 (or ⌘+M for Android Studio 2.0 or newer)
+6. Install [Frappé](http://getfrappe.com) (OSX only)
 
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