Windows development scripts (Path-Check#288)

Adds scripts for development on Windows (and mentioned them in README.md)
Fixes Path-Check#267

1_start_react.bat

@@ -0,0 +1,5 @@
+@echo off
+where /q yarn || ECHO Unable to find 'yarn' && EXIT /B
+@echo on
+cmd /c yarn install
+react-native start

2_start_android_app.bat

@@ -0,0 +1,2 @@
+npx react-native run-android
+

README.md

@@ -32,7 +32,7 @@ Please refer to `docs/Private Kit Diagram.png` for a basic overview on the seque
 
 ## Developer Setup
 
-Refer to and run the dev_setup.sh for needed tools.
+Refer to and run the dev_setup.sh (Linux/MacOS) or dev_setup.bat (Windows) for needed tools.
 
 ### iOS Configuration - First Time Setup
 

dev_setup.bat

@@ -0,0 +1,113 @@
+@echo off
+goto check_Permissions
+
+:check_Permissions
+echo ---------------------------------------
+echo Private-kit - Windows development setup
+echo ---------------------------------------
+net session >nul 2>&1
+if %errorLevel% NEQ 0 (
+  echo Admin permissions needed. Please run as administrator.
+  pause
+  exit
+) 
+
+@echo off
+where /q choco 
+if %errorLevel% == 0 (	
+  goto tools_setup	
+) 
+
+echo This setup script is based on Chocolatey, and it's not installed.
+echo To install it, press SPACE to open a Powershell window and paste this command there:
+echo.
+echo Set-ExecutionPolicy Bypass -Scope Process -Force; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072; iex ((New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))
+echo.
+echo.
+pause > nul
+start powershell
+echo.
+echo When the Chocolatey installation completes, close the Powershell window and run this batch file again.
+echo.
+pause
+exit 
+
+:tools_setup
+echo.
+echo These tools will be installed through through Chocolatey:
+echo   * Adopt Open JDK 8
+echo   * Android Studio
+echo   * NodeJS
+echo   * Python 2
+echo   * Yarn
+echo.
+echo Press SPACE to continue, or abort the execution and edit the script to customize your installation.
+pause > nul
+echo.
+choco install adoptopenjdk8 androidstudio nodejs.install python2 yarn -y
+echo.
+call RefreshEnv.cmd
+cls
+echo.
+echo We need the Android 9 (Pie) SDK.  Please follow these steps:
+echo 1) Open Android Studio
+echo 2) At bottom of the 'Welcome to Android Studio' screen click on Configure ^> SDK Manager
+echo    NOTE: You might need to close and reopent Android Studio the first time to see this.
+echo    * Under the SDK Platforms tab, click Show Package Details
+echo    * Expand the 'Android 9.0 (Pie)' entry
+echo      - Check: Android SDK Platform 29
+echo      - Check: Intel x86 Atom_64 System Image or Google APIs Intel x86 Atom System Image
+echo    * Under the SDK Tools tab, check 'Show Package Details'
+echo    * Expand the 'Android SDK Build-Tools' entry
+echo      - Check: 28.0.3
+echo    * Press Apply button, then OK and agree to terms to download necessary pieces.
+echo    * Press Finish button, then OK button after downloads complete. 
+echo.
+echo When you are done with the Android tools setup, press SPACE to continue.
+echo.
+pause > nul
+call RefreshEnv.cmd
+cls
+echo.
+echo Please set/adjust these environment variables in your system settings before building/running:
+echo  - ANDROID_HOME should point to the root of the Android SDK, probably %LOCALAPPDATA%\Android\Sdk
+echo  - PATH must be edited to include these entries:
+echo      %%ANDROID_HOME%%\tools
+echo      %%ANDROID_HOME%%\platform-tools
+echo      %%ANDROID_HOME%%\platform-tools\bin
+echo      %%ANDROID_HOME%%\emulator
+echo.
+echo When you are done with the environment variables setup, press SPACE to continue.
+echo.
+pause > nul
+call RefreshEnv.cmd
+cls
+echo.
+echo React Native will now be installed.
+echo Press SPACE to continue.
+pause > nul
+echo.
+cmd /c npm install -g react-native-cli
+cmd /c npm install
+echo.
+echo.
+echo Press SPACE to continue.
+pause > nul
+cls
+echo.
+echo All set! Try this to get started:
+echo.
+echo   Run Android Studio then:
+echo     * Select 'Configure ^> AVD Manager' at the bottom
+echo     * Create and run a virtual device, such as a Pixel 2
+echo.
+echo   In a terminal run:
+echo       > 1_start_react.bat
+echo   In a second terminal:
+echo       > 2_start_android_app.bat
+echo   You can edit files and repeat step 2 again as necessary to debug.
+echo.
+echo   Remember that you need to set your API Key for the Google Maps SDK, refer to README.md for details
+echo.
+pause
+