SVD++ demo
Update Svdpp.scala
Test SVD++
Update Svdpp.scala
Update AnalyticsSuite.scala
Merge pull request #102 from ankurdave/clustered-edge-index

Add clustered index on edges by source vertex
Update Svdpp.scala
Update Svdpp.scala
Update Svdpp.scala
Merge pull request #104 from jianpingjwang/master

SVD++ demo
Merge remote-tracking branch 'upstream/master' into add_project_to_graph

Conflicts:
	graph/src/main/scala/org/apache/spark/graph/Graph.scala
	graph/src/main/scala/org/apache/spark/graph/impl/GraphImpl.scala
Reimplement Graph.mask using innerJoin