Added CI (#8)

.github/workflows/test.yaml

@@ -0,0 +1,16 @@
+name: Test
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: Swatinem/rust-cache@v1
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+      - name: test
+        run: cargo test