update CHANGES.txt dates 	Change on 2014/08/07 by pclay <pclay@google.com> ------------- Created by MOE: http://code.google.com/p/moe-java MOE_MIGRATED_REVID=72841885
update CHANGES.txt dates
	Change on 2014/08/07 by pclay <pclay@google.com>
-------------
Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=72841885

peltekster/bigdata-interop-leanplum,GoogleCloudDataproc/hadoop-connectors,ravwojdyla/bigdata-interop,GoogleCloudDataproc/hadoop-connectors