修正 android link 问题，#3

.npmignore

 example/
+android/build/

android/src/main/java/cn/qiuxiang/react/amap3d/AMap3DPackage.java

+package cn.qiuxiang.react.amap3d;
+
+import com.facebook.react.ReactPackage;
+import com.facebook.react.bridge.JavaScriptModule;
+import com.facebook.react.bridge.NativeModule;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.uimanager.ViewManager;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+public class AMap3DPackage implements ReactPackage {
+    @Override
+    public List<NativeModule> createNativeModules(ReactApplicationContext reactContext) {
+        return Collections.emptyList();
+    }
+
+    @Override
+    public List<Class<? extends JavaScriptModule>> createJSModules() {
+        return Collections.emptyList();
+    }
+
+    @Override
+    public List<ViewManager> createViewManagers(ReactApplicationContext reactContext) {
+        return Arrays.<ViewManager>asList(
+                new AMapViewManager(),
+                new AMapMarkerManager(),
+                new AMapOverlayManager(),
+                new AMapPolylineManager(),
+                new AMapPolygonManager(),
+                new AMapCircleManager());
+    }
+}