Updates for React Native 0.59 vs 0.60 on Android

ref: #29

Author: Christopher J. Brody

templates/android.js

@@ -19,8 +19,9 @@ module.exports = platform => [{
 apply plugin: 'com.android.library'
 apply plugin: 'maven'
 
-// Matches values in recent template from React Native (0.59)
+// Matches values in recent template from React Native 0.59 / 0.60
 // https://github.com/facebook/react-native/blob/0.59-stable/template/android/build.gradle#L5-L9
+// https://github.com/facebook/react-native/blob/0.60-stable/template/android/build.gradle#L5-L9
 def DEFAULT_COMPILE_SDK_VERSION = 28
 def DEFAULT_BUILD_TOOLS_VERSION = "28.0.3"
 def DEFAULT_MIN_SDK_VERSION = 16
@@ -44,8 +45,9 @@ android {
 repositories {
     maven {
         // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
-        // Matches recent template from React Native (0.59)
+        // Matches recent template from React Native 0.59 / 0.60
         // https://github.com/facebook/react-native/blob/0.59-stable/template/android/build.gradle#L30
+	// https://github.com/facebook/react-native/blob/0.60-stable/template/android/build.gradle#L28
         url "$projectDir/../node_modules/react-native/android"
     }
     mavenCentral()
@@ -179,7 +181,10 @@ public class ${name}Module extends ReactContextBaseJavaModule {
 
 import android.view.View;
 
+// AppCompatCheckBox import for React Native pre-0.60:
 import android.support.v7.widget.AppCompatCheckBox;
+// AppCompatCheckBox import for React Native 0.60(+):
+// import androidx.appcompat.widget.AppCompatCheckBox;
 
 import com.facebook.react.uimanager.SimpleViewManager;
 import com.facebook.react.uimanager.ThemedReactContext;