Merge pull request #299 from contentstack/staging

Back merge (Staging to development)

Author: harshithad0703

README.md

@@ -281,6 +281,7 @@ data.then(function(sync_data,  err) {
 
 ##### Advanced sync queries
 
+You can use advanced sync queries to fetch custom results while performing initial sync. 
 [Read advanced sync queries documentation](https://www.contentstack.com/docs/developers/use-the-sync-apis-with-sdk/use-sync-api-with-javascript-sdk#advanced-sync-queries)
 
 ### Helpful Links