add windows ci (#20281)

Summary:
[![Build status](https://ci.appveyor.com/api/projects/status/79bl3twr4palqmra/branch/feature/appveyor?svg=true)](https://ci.appveyor.com/project/gengjiawen/react-native/branch/master)
Add windows ci
pass all current ci.
none
 [GENERAL] [INTERNAL] [CI] - add windows ci
Pull Request resolved: https://github.com/facebook/react-native/pull/20281

Differential Revision: D8924625

Pulled By: hramos

fbshipit-source-id: 6b933a8affe7c131c0fd02694f6177885a196611

README.md

@@ -1,4 +1,4 @@
-# [React Native](https://facebook.github.io/react-native/) ·  [![Circle CI Status](https://circleci.com/gh/facebook/react-native.svg?style=shield)](https://circleci.com/gh/facebook/react-native) [![npm version](https://badge.fury.io/js/react-native.svg)](https://badge.fury.io/js/react-native) [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](CONTRIBUTING.md#pull-requests)
+# [React Native](https://facebook.github.io/react-native/) ·  [![Circle CI Status](https://circleci.com/gh/facebook/react-native.svg?style=shield)](https://circleci.com/gh/facebook/react-native) [![Build status](https://ci.appveyor.com/api/projects/status/github/facebook/react-native?branch=master&svg=true)](https://ci.appveyor.com/project/facebok/react-native/branch/master) [![npm version](https://badge.fury.io/js/react-native.svg)](https://badge.fury.io/js/react-native) [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](CONTRIBUTING.md#pull-requests)
 
 Learn once, write anywhere: Build mobile apps with React.
 

appveyor.yml

@@ -0,0 +1,42 @@
+environment:
+    ANDROID_HOME: "C:\\android-sdk-windows"
+    ANDROID_NDK: "C:\\android-sdk-windows\\android-ndk-r10e"
+    ANDROID_BUILD_VERSION: 26
+    ANDROID_TOOLS_VERSION: 26.0.3
+
+    GRADLE_OPTS: -Dorg.gradle.daemon=false
+
+    SDK_TOOLS_URL: https://dl.google.com/android/repository/sdk-tools-windows-3859397.zip
+    NDK_TOOLS_URL: https://dl.google.com/android/repository/android-ndk-r10e-windows-x86_64.zip
+
+    matrix:
+        - nodejs_version: 8
+        - nodejs_version: 10
+
+install:
+    # Install Android SDK Tools
+    - mkdir "%ANDROID_HOME%"
+    - appveyor DownloadFile "%SDK_TOOLS_URL%" -FileName "%TMP%/sdk-tools.zip"
+    - 7z x "%TMP%/sdk-tools.zip" -o"%ANDROID_HOME%" > nul
+    - set PATH=%PATH%;"%ANDROID_HOME%\tools\bin"
+
+    - yes 2> nul | sdkmanager --licenses > nul
+    - sdkmanager "system-images;android-19;google_apis;armeabi-v7a"
+    - sdkmanager "platforms;android-%ANDROID_BUILD_VERSION%"
+    - sdkmanager  "build-tools;%ANDROID_TOOLS_VERSION%"
+    - sdkmanager "add-ons;addon-google_apis-google-23"
+    - sdkmanager "extras;android;m2repository"
+
+    - appveyor DownloadFile "%NDK_TOOLS_URL%" -FileName "%TMP%/ndk.zip"
+    - 7z x "%TMP%/ndk.zip" -o"%ANDROID_HOME%" > nul
+
+    - ps: Install-Product node $env:nodejs_version
+    - node --version
+    - npm --version
+    - appveyor-retry npm install
+
+build_script:
+  - gradlew.bat RNTester:android:app:assembleRelease
+
+test_script:
+    - npm test