Playground for windows (#5644)

Add script to start the packager on Windows

docs/docs/showcases.md

@@ -23,8 +23,15 @@ The playground example is a place where we showcase and test all features of rea
 git clone https://github.com/wix/react-native-navigation
 cd react-native-navigation
 npm install
+
+# for iOS:
 npm run xcode # Opens XCode
-npm start # Starts the packager
+npm start # Starts the packager on linux like systems
+
+# for Android:
+# 1. open Android Studio inside ".\playground"
+# 2. start a emulator
+npm run start-windows # Start the packager if you are on a windows system
 
-# Run the app in Simulator or on Device from within XCode
+# Run the app in Simulator or on Device from within XCode/Android Studio
 ```

package.json

@@ -27,6 +27,7 @@
     "clean": "node ./scripts/clean",
     "prestart": "npm run build",
     "start": "node ./scripts/start",
+    "start-windows": "node ./scripts/start-windows",
     "pretest-js": "npm run build",
     "test-js": "node ./scripts/test-js",
     "test-unit-ios": "node ./scripts/test-unit --ios",

scripts/start-windows.js

@@ -0,0 +1,11 @@
+const exec = require('shell-utils').exec;
+
+run();
+
+function run() {
+  // exec.killPort(8081);
+  // exec.execSync(`rd "./lib/dist" /Q/S`);
+  exec.execSync(`"./node_modules/.bin/tsc"`);
+  exec.execSync(`adb reverse tcp:8081 tcp:8081`);
+  exec.execSync(`node ./node_modules/react-native/local-cli/cli.js start`);
+}