add stub android app, for now this does nothing but it -does- compile successfully (not sure if it actually runs)

android/src/main/AndroidManifest.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+      package="net.monarchpass.piecannon"
+      android:versionCode="1"
+      android:versionName="1.0">
+    <application android:label="@string/app_name">
+        <activity android:name="PieCannon"
+                  android:label="@string/app_name">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+    <uses-sdk android:minSdkVersion="24" />
+</manifest>

android/src/main/java/net/monarchpass/piecannon/App.java

@@ -0,0 +1,5 @@
+package net.monarchpass.piecannon;
+
+import android.app.Application;
+
+public class App extends Application {}

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

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="app_name">PieCannon</string>
+</resources>