Fix Apache Snapshot repository
Add Muti-Dimension KMeans implementation
Add Multi-Dimension KMeans data generator
Add script for Multi-Dimension KMeans and fix some breaks
Merge branch 'master' of github.com:project-flink/flink-perf
Tested WC, WC No Combiner,CP, KMeans
Add TPCH3 script(unTested)
Didn't find example package for TPCH3, copy the code then build pacakge.
Add PageRank script
Add KMeans for Low(D=3, K=8) and High(D=1000,K=800) dimension
clean the data generator stuffs
Use random directed graph for Page Rank's dataset
Merge pull request #2 from qmlmoon/master

Finished Flink part script for performance evaluation