Add Github CI

.github/workflows/linux.yml

@@ -0,0 +1,32 @@
+name: Linux CI
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+  schedule:
+    - cron: "0 6 * * 6"
+jobs:
+  build-ubuntu:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - { os: ubuntu-latest, crystal: latest }
+          - { os: ubuntu-latest, crystal: nightly }
+    runs-on: ${{matrix.os}}
+    steps:
+      - name: Install Crystal
+        uses: crystal-lang/install-crystal@v1
+        with:
+          crystal: ${{matrix.crystal}}
+      - uses: actions/checkout@v2
+      - name: Install dependencies
+        run: sudo apt install libgtk-3-dev libwebkit2gtk-4.0-dev
+      - name: Install crystal land dependencies
+        run: shards install
+      - name: Compile library
+        run: make
+      - name: Run tests
+        run: crystal spec

.github/workflows/macos.yml

@@ -0,0 +1,22 @@
+name: Mac OSX CI
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+  schedule:
+    - cron: "0 6 * * 6"
+jobs:
+  build-macos:
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Crystal
+        uses: crystal-lang/install-crystal@v1
+      - name: Install dependencies
+        run: shards install
+      - name: Compile library
+        run: make
+      - name: Run tests
+        run: crystal spec

.github/workflows/windows.yml

@@ -0,0 +1,27 @@
+name: Windows CI
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+  schedule:
+    - cron: "0 6 * * 6"
+jobs:
+  build-windows:
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Crystal
+        uses: crystal-lang/install-crystal@v1
+      - name: Install Webview2 SDK
+        run: |
+          mkdir libs\webview2
+          nuget.exe install Microsoft.Web.Webview2 -Version 1.0.1150.38 -OutputDirectory libs\webview2
+          copy libs\webview2\microsoft.web.webview2.1.0.1150.38\build\native\include\*.h ext\
+      - name: Install crystal land dependencies
+        run: shards install
+      - name: Compile library
+        run: make
+      - name: Run tests
+        run: crystal spec

README.md

@@ -1,3 +1,6 @@
+[![Linux CI](https://github.com/naqvis/webview/actions/workflows/linux.yml/badge.svg)](https://github.com/naqvis/webview/actions/workflows/linux.yml)
+[![MacOSX CI](https://github.com/naqvis/webview/actions/workflows/macos.yml/badge.svg)](https://github.com/naqvis/webview/actions/workflows/macos.yml)
+[![Windows CI](https://github.com/naqvis/webview/actions/workflows/windows.yml/badge.svg)](https://github.com/naqvis/webview/actions/workflows/windows.yml)
 # Crystal Webview
 
 Crystal language bindings for [zserge's Webview](https://github.com/zserge/webview) which is an excellent cross-platform single-header webview library for C/C++ using Gtk, Cocoa, or MSHTML/Edge, depending on the host OS.