Merge pull request #35 from mtn/master

Minor correction to README

Author: Jon Wayne Parrott

README.md

@@ -1,7 +1,7 @@
 # Guestbook
 
 Guestbook is an example application showing basic usage of Google App
-Engine. Users can read & write text messages and optionaly log-in with
+Engine. Users can read & write text messages and optionally log-in with
 their Google account. Messages are stored in App Engine (NoSQL)
 High Replication Datastore (HRD) and retrieved using a strongly consistent
 (ancestor) query.