Use Github action to run tests against PRs (#12)

Author: gllghr

.github/workflows/test.yml

@@ -0,0 +1,11 @@
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-18.04
+    steps:
+    - uses: actions/checkout@v1
+    - name: Build
+      run: cargo build --verbose
+    - name: Run tests
+      run: cargo test --verbose