added azure-storage dependency

Author: irgipaulius

package.json

@@ -26,6 +26,7 @@
     "@microsoft/microsoft-graph-client": "^1.0.0",
     "@types/node-persist": "0.0.33",
     "async": "^2.6.0",
+    "azure-storage": "^2.10.1",
     "bcrypt-nodejs": "^0.0.3",
     "bluebird": "^3.5.1",
     "body-parser": "^1.18.2",