Adds Yammer integration

yammer/index.js

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+module.exports = Franz => Franz;

yammer/package.json

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+{
+  "name": "Yammer",
+  "version": "1.0.0",
+  "description": "Yammer",
+  "main": "index.js",
+  "author": "Sally Young <[email protected]>",
+  "license": "MIT",
+  "config": {
+    "serviceURL": "https://www.yammer.com/login",
+    "serviceName": "Yammer",
+    "message": "",
+    "popup": [],
+    "hasNotificationSound": false,
+    "hasIndirectMessages": false,
+    "hasTeamID": false,
+    "customURL": false,
+    "hostedOnly": false,
+    "webviewOptions": {
+      "disablewebsecurity": ""
+    },
+    "openDevTools": false
+  }
+}

yammer/webview.js

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+module.exports = (Franz, options) => {
+  const getMessages = () => {
+    const countText = $('.yj-thread-list--new-message-text:visible').text();
+    const regex = /Click to see (\d+) new/g;
+    let newMessageCount = 0;
+    if (countText && countText.length) {
+      let m;
+      while ((m = regex.exec(countText)) !== null) {
+        if (m.index === regex.lastIndex) {
+          regex.lastIndex++;
+        }
+        if (typeof m[1] !== undefined) {
+          newMessageCount = m[1];
+        }
+      }
+    }
+
+    Franz.setBadge(newMessageCount);
+  };
+
+  // check for new messages every second and update Franz badge
+  Franz.loop(getMessages);
+}