Add version headers

Summary: Last big batch of adding license headers in Java code where they were missing.

Reviewed By: jknoxville

Differential Revision: D15164860

fbshipit-source-id: 4c0a61eec7b5659fdc674ebed85f2ade60dd0aa0

android/sample/AndroidManifest.xml

@@ -1,5 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright (c) Facebook, Inc. and its affiliates.
+  ~
+  ~ This source code is licensed under the MIT license found in the LICENSE file
+  ~ in the root directory of this source tree.
+  -->
+
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
           package="com.facebook.flipper.sample">
   <uses-permission android:name="android.permission.INTERNET" />

android/sample/src/main/res/values/strings.xml

@@ -1,5 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright (c) Facebook, Inc. and its affiliates.
+  ~
+  ~ This source code is licensed under the MIT license found in the LICENSE file
+  ~ in the root directory of this source tree.
+  -->
+
 <resources>
   <string name="app_name">Flipper</string>
 </resources>

android/sample/src/main/res/values/styles.xml

@@ -1,5 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright (c) Facebook, Inc. and its affiliates.
+  ~
+  ~ This source code is licensed under the MIT license found in the LICENSE file
+  ~ in the root directory of this source tree.
+  -->
+
 <resources>
   <style name="NoTitleBarWhiteBG" parent="Theme.AppCompat.Light">
     <item name="android:textColor">#000000</item>