feat(productive): add new recipe

recipes/productive/index.js

@@ -0,0 +1 @@
+module.exports = Ferdium => Ferdium;

recipes/productive/package.json

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+{
+  "id": "productive",
+  "name": "Productive",
+  "version": "1.0.0",
+  "license": "MIT",
+  "config": {
+    "serviceURL": "https://app.productive.io/"
+  }
+}

recipes/productive/webview.js

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+function _interopRequireDefault(obj) {
+  return obj && obj.__esModule ? obj : { default: obj };
+}
+
+const _path = _interopRequireDefault(require('path'));
+
+module.exports = Ferdium => {
+  // TODO: If your SNAME service has unread messages, uncomment these lines to implement the logic for updating the badges
+  // const getMessages = () => {
+  //   // TODO: Insert your notification-finding code here
+  //   Ferdium.setBadge(0, 0);
+  // };
+  // Ferdium.loop(getMessages);
+
+  Ferdium.injectCSS(_path.default.join(__dirname, 'service.css'));
+};