Adding app icons and fixing device builds

mobile/android/app/src/main/AndroidManifest.xml

@@ -7,8 +7,8 @@
     <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>
 
     <uses-sdk
-        android:minSdkVersion="16"
-        android:targetSdkVersion="22" />
+        android:minSdkVersion="24"
+        android:targetSdkVersion="27" />
 
     <application
       android:name=".MainApplication"
@@ -27,6 +27,9 @@
         </intent-filter>
       </activity>
       <activity android:name="com.facebook.react.devsupport.DevSettingsActivity" />
+      <meta-data
+        android:name="com.google.android.geo.API_KEY"
+        android:value="AIzaSyDN4E_vzO4cKjKHkMg_49hX1GBnU34kx4U"/>
     </application>
 
 </manifest>

mobile/android/app/src/main/java/com/deightonar/MainApplication.java

@@ -12,6 +12,7 @@ import java.util.Arrays;
 import java.util.List;
 
 import com.reactnativenavigation.NavigationApplication;
+import com.airbnb.android.react.maps.MapsPackage;
 
 public class MainApplication extends NavigationApplication {
     @Override
@@ -24,7 +25,7 @@ public class MainApplication extends NavigationApplication {
       // Add additional packages you require here
       // No need to add RnnPackage and MainReactPackage
       return Arrays.<ReactPackage>asList(
-        // eg. new VectorIconsPackage()
+          new MapsPackage()
       );
     }