Merge pull request #44 from nishkamravi2/yarn

Changes to Yarn branch for CDH5 and MR2
rebuild mahout against hadoop2.2.0
Merge pull request #45 from shimingfei/yarn

Rebuild mahout against Hadoop-2.2.0
Support nutchindexing
hivebench: SIZE variable was modified on yarn branch
pagerangk: SIZE variable was modified on yarn branch
Merge pull request #52 from eoriented/modify

hivebench: SIZE variable was modified on yarn branch
change all tmplogfile to workload dir
apply jayunit's patch to yarn
add rm
Merge pull request #53 from adrian-wang/antihun

change all tmplogfile to workload dir
Update run.sh
Update README.md
Update README.md
Update README.md
Update README.md
Merge pull request #49 from qiansl127/nutchindexing-yarn-support

Support nutchindexing