Signing the CLA (#13867)

.clabot

@@ -1,5 +1,6 @@
 {
   "contributors": [
+    "NikhilMahana",
     "xdamman",
     "unlock-deployer",
     "smombartz",
@@ -69,4 +70,4 @@
     "Tguntenaar"
   ],
   "message": "Thank you for your pull request and welcome to Unlock! We require contributors to sign our [Contributor License Agreement](https://github.com/unlock-protocol/unlock/blob/master/CLA.txt), and we don't seem to have the users {{usersWithoutCLA}} on file. \nIn order for us to review and merge your code, please open _another_ pull request with a single modification: your github username added to the file `.clabot`.\nThank you! "
-}
+}