Add release action

.github/workflows/build.yaml

@@ -1,12 +1,12 @@
-name: Build project
+name: Build
 
 on:
-    push:
+  push:
-      branches:
+    branches:
-        - release
+      - release
-    pull_request:
+  pull_request:
-      branches:
+    branches:
-        - release
+      - release
 
 jobs:
   buildForAllSupportedPlatforms:

.github/workflows/release.md

@@ -0,0 +1,27 @@
+# micromissiles-unity
+
+## Build ${{ github.ref }}
+
+## Instructions
+
+Download and extract the archive corresponding to your platform (Windows or Mac) from the binaries listed below.
+
+## Windows
+
+1. Download the zip file for Windows: `micromissiles-${{ github.ref }}-windows_x86_64.zip`.
+2. Unzip the zip file. The zip file should contain a single directory called `micromissiles-${{ github.ref }}-windows_x86_64`.
+3. Run `micromissiles-<version>-StandaloneWindows64.exe`.
+
+## Mac
+
+1. Download the zip file for Darwin: `micromissiles-${{ github.ref }}-darwin.zip`.
+2. Unzip the zip file. The zip file should contain a single app file.
+3. Change the permission of the app file recursively by running:
+   ```bash
+   chmod -R +x micromissiles-<version>-StandaloneOSX.app
+   ```
+4. Open the app file.
+5. If you get a warning that Apple cannot check the application for malicious software:
+     * Open `System Preferences`.
+     * Navigate to `Privacy & Security`.
+     * Click on `Open Anyway` to bypass Apple's developer check.

.github/workflows/release.yaml

@@ -0,0 +1,25 @@
+name: Release
+
+on:
+  workflow_run:
+      workflows: ['Build']
+      types: [completed]
+      branches:
+          - release
+
+jobs:
+  build:
+    name: Create release
+    runs-on: ubuntu-latest
+    if: ${{ github.event.workflow_run.conclusion == 'success' }}
+    steps:
+      - name: Create release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: ${{ github.ref }}
+          body_path: .github/workflows/release.md
+          draft: false
+          prerelease: false

README.md

@@ -10,6 +10,10 @@ You can find the latest release [here](https://github.com/PisterLab/micromissile
 
 ## Windows
 
+1. Download the zip file for Windows: `micromissiles-<version>-windows_x86_64.zip`.
+2. Unzip the zip file. The zip file should contain a single directory called `micromissiles-<version>-windows_x86_64`.
+3. Run `micromissiles-<version>-StandaloneWindows64.exe`.
+
 ## Mac
 
 1. Download the zip file for Darwin: `micromissiles-<version>-darwin.zip`.