Merge pull request #269 from intercom/mm/add_event_metadata

Add event metadata example to README

Author: murtron

README.md

@@ -242,7 +242,11 @@ $client->segments->getSegment("59c124f770e00fd819b9ce81", ["include_count"=>"tru
 $client->events->create([
     "event_name" => "testing",
     "created_at" => 1391691571,
-    "email" => "[email protected]"
+    "email" => "[email protected]",
+    "metadata" => [
+        "order_date" => 1392036272,
+        "stripe_invoice" => "inv_3434343434"
+    ]
 ]);
 
 /** View events for a user */