Add example

Example/android/app/src/main/java/com/example/MainActivity.java

@@ -0,0 +1,42 @@
+package com.example;
+
+import com.facebook.react.ReactActivity;
+import com.lwansbrough.RCTCamera.RCTCameraPackage;
+import com.facebook.react.ReactPackage;
+import com.facebook.react.shell.MainReactPackage;
+
+import java.util.Arrays;
+import java.util.List;
+
+public class MainActivity extends ReactActivity {
+
+    /**
+     * Returns the name of the main component registered from JavaScript.
+     * This is used to schedule rendering of the component.
+     */
+    @Override
+    protected String getMainComponentName() {
+        return "Example";
+    }
+
+    /**
+     * Returns whether dev mode should be enabled.
+     * This enables e.g. the dev menu.
+     */
+    @Override
+    protected boolean getUseDeveloperSupport() {
+        return BuildConfig.DEBUG;
+    }
+
+    /**
+     * A list of packages used by the app. If the app uses additional views
+     * or modules besides the default ones, add more packages here.
+     */
+    @Override
+    protected List<ReactPackage> getPackages() {
+        return Arrays.<ReactPackage>asList(
+            new MainReactPackage(),
+            new RCTCameraPackage()
+        );
+    }
+}