play with github actions

.github/workflows/lint.yml

@@ -0,0 +1,13 @@
+name: Lint
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - uses: azohra/shell-linter@master