README: Fix typo of kwarg "params" in sample code.

Author: weisi

README.md

@@ -408,7 +408,7 @@ import CloudFlare
 def main():
     zone_name = sys.argv[1]
     cf = CloudFlare.CloudFlare()
-    zone_info = cf.zones.get(param={'name': zone_name})
+    zone_info = cf.zones.get(params={'name': zone_name})
     zone_id = zone_info['id']
 
     dns_name = sys.argv[2]

README.rst

@@ -458,7 +458,7 @@ A DNS zone delete code example (be careful)
     def main():
         zone_name = sys.argv[1]
         cf = CloudFlare.CloudFlare()
-        zone_info = cf.zones.get(param={'name': zone_name})
+        zone_info = cf.zones.get(params={'name': zone_name})
         zone_id = zone_info['id']
 
         dns_name = sys.argv[2]