apache/spark — pull request #1782 by gchen (2014-08-05 08:09:05+00:00)
Title: [SPARK-2859] update url of Kryo project in related docs

JIRA Issue: https://issues.apache.org/jira/browse/SPARK-2859

Kryo project has been migrated from googlecode to github, hence we need to update its URL in related docs such as tuning.md.