mini-mongo cache clear on connect to remove stale documents (#275)

* NetInfo change event changed to connectionChange event.

* Clearing cache of any stale collections after connection is established.

src/Meteor.js

@@ -97,6 +97,13 @@ module.exports = {
 
     Data.ddp.on("connected", ()=>{
 
+      // Clear the collections of any stale data in case this is a reconnect
+      if (Data.db && Data.db.collections) {
+        for (var collection in Data.db.collections) {
+          Data.db[collection].remove({});
+        }
+      }
+
       Data.notify('change');
 
       console.info("Connected to DDP server.");