ci: move to Github Actions (#530)

package.json

@@ -72,7 +72,8 @@
     "generate-and-deploy-docs": "npm run generate-docs && gh-pages --dist docs --dest docs",
     "watch": "webpack --watch --config webpack.config.js",
     "prepublishOnly": "npm run build",
-    "lint": "eslint ./src",
+    "lint:check": "eslint ./src",
+    "lint:fix": "eslint --fix ./src",
     "testem": "testem",
     "test": "nyc --reporter=html --reporter=text ava",
     "test:watch": "ava --watch",