ADD github action

Author: ndelangen

.github/workflows/chromatic.yml

@@ -0,0 +1,21 @@
+name: "Chromatic"
+on:
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+    - run: |
+        yarn
+    - run: |
+        yarn build
+    - run: |
+        yarn build-storybook
+    - uses: chromaui/action@v1
+      with: 
+        appCode: ${{ secrets.CHROMATIC_APP_CODE }}
+        token: ${{ secrets.GITHUB_TOKEN }}
+        storybookBuildDir: storybook-static
+        

package.json

@@ -10,6 +10,7 @@
     "clean": "rimraf ./dist",
     "compile": "babel ./src --out-dir ./dist",
     "prepublish": "npm run clean && npm run compile",
+    "build-storybook": "build-storybook",
     "storybook": "start-storybook -p 9010",
     "test": "jest"
   },
@@ -28,8 +29,8 @@
     "@storybook/client-logger": "^5.0.0",
     "@storybook/react": "^5.0.0",
     "babel-loader": "^8.0.4",
-    "css-loader": "^3.1.0",
     "core-js": "^3.0.1",
+    "css-loader": "^3.1.0",
     "eslint-config-taller": "^2.0.0",
     "eslint-plugin-flowtype": "^3.5.1",
     "jest": "^24.7.1",
@@ -44,5 +45,8 @@
     "@storybook/react": "^5.0.0",
     "babel-plugin-react-docgen": "^2.0.0",
     "react": ">=15.0.0 || ^16.0.0"
+  },
+  "dependencies": {
+    "storybook-chromatic": "^3.0.3"
   }
 }