Merge pull request gree#44 from KojiNakamaru/fix/readme_about_android…

…_hardware_accel

added "Notes on Android" to the "Sample Project" section.

README.md

@@ -38,3 +38,7 @@ https://github.com/gree/unity-webview/issues/10
     $ open sample/Assets/Sample.unity
     $ open dist/unity-webview.unitypackage
     Import all files
+
+#### Notes on Adnroid
+
+Once you built an apk, please copy `sample/Temp/StatingArea/AndroidManifest-main.xml` to `sample/Assets/Plugins/AndroidManifest.xml`, edit the latter to add `android:hardwareAccelerated="true"` to `<activity android:name="com.unity3d.player.UnityPlayerActivity" ...`, and rebuilt the apk. Although some old/buggy devices may not work well with `android:hardwareAccelerated="true"`, the webview runs very smoothly with this setting.