Add build workflow for windows.

Also, add some badges :P


Former-commit-id: 697095b9f1d5055205f4a4c5e1c880c4c6581faa
Former-commit-id: 6a32c4caea7e7460058ecf46ac12ddedba70b1ff

.github/workflows/build.yml

@@ -0,0 +1,36 @@
+name: Build
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  build-windows-64:
+
+    runs-on: windows-2019
+
+    steps:
+    - name: Checkout 🛎️
+      uses: actions/checkout@v2
+
+    - name: Build
+      run: cargo build --release --manifest-path .\platform\rustboyadvance-sdl2\Cargo.toml
+
+    - name: Collect artifacts
+      run: |
+        mkdir artifacts
+        mkdir artifacts\assets
+        copy README.md artifacts
+        copy LICENSE artifacts
+        copy .\assets\icon_cropped_small.png artifacts\assets
+        copy .\target\release\rustboyadvance-sdl2.exe artifacts
+        copy .\platform\rustboyadvance-sdl2\msvc\64\*.dll artifacts
+        copy .\platform\rustboyadvance-sdl2\msvc\64\LICENSE.* artifacts
+
+    - name : Uplaod artifacts
+      uses: actions/upload-artifact@v2
+      with:
+        name: rustboyadvance-sdl2-X64_86
+        path: artifacts
+

README.md

@@ -1,6 +1,6 @@
 # RustBoyAdvance-NG
 
-![license](https://img.shields.io/github/license/michelhe/rustboyadvance-ng) [![Build Status](https://travis-ci.com/michelhe/rustboyadvance-ng.svg?branch=master)](https://travis-ci.com/michelhe/rustboyadvance-ng)
+![license](https://img.shields.io/github/license/michelhe/rustboyadvance-ng) ![Build](https://github.com/michelhe/rustboyadvance-ng/workflows/Build/badge.svg?branch=master) 
 
 Nintendo GameBoy Advance ™ emulator and debugger, written in rust.
 
@@ -9,7 +9,7 @@ Nintendo GameBoy Advance ™ emulator and debugger, written in rust.
 <img width="360px" src="assets/icon_cropped_small.png">
 </div>
 
-WebAssembly Demo: https://michelhe.github.io/rustboyadvance-ng/
+WebAssembly Demo: https://michelhe.github.io/rustboyadvance-ng/ ![Deploy](https://github.com/michelhe/rustboyadvance-ng/workflows/Deploy/badge.svg?branch=master)
 
 # Project Structure
 * `rustboyadvance-core/src` - Main library crate