Add android manifest for internet permission

Assets/SimpleFirebaseUnity/Plugins/Android/AndroidManifest.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.dikra.simplefirebaseunity" android:versionName="0.1" android:versionCode="1" android:installLocation="preferExternal">
+  <supports-screens android:smallScreens="true" android:normalScreens="true" android:largeScreens="true" android:xlargeScreens="true" android:anyDensity="true" />
+  <application android:theme="@style/UnityThemeSelector" android:icon="@drawable/app_icon" android:label="@string/app_name" android:debuggable="false" android:isGame="true" android:banner="@drawable/app_banner">
+    <activity android:name="com.unity3d.player.UnityPlayerActivity" android:label="@string/app_name" android:screenOrientation="portrait" android:launchMode="singleTask" android:configChanges="mcc|mnc|locale|touchscreen|keyboard|keyboardHidden|navigation|orientation|screenLayout|uiMode|screenSize|smallestScreenSize|fontScale">
+      <intent-filter>
+        <action android:name="android.intent.action.MAIN" />
+        <category android:name="android.intent.category.LAUNCHER" />
+        <category android:name="android.intent.category.LEANBACK_LAUNCHER" />
+      </intent-filter>
+      <meta-data android:name="unityplayer.UnityActivity" android:value="true" />
+    </activity>
+  </application>
+  <uses-sdk android:minSdkVersion="9" android:targetSdkVersion="23" />
+  <uses-feature android:glEsVersion="0x00020000" />
+  <uses-feature android:name="android.hardware.touchscreen" android:required="false" />
+  <uses-feature android:name="android.hardware.touchscreen.multitouch" android:required="false" />
+  <uses-feature android:name="android.hardware.touchscreen.multitouch.distinct" android:required="false" />
+	<uses-permission android:name="android.permission.INTERNET" />
+	<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+</manifest>