Split GraphSuite; simplify LocalSparkContext
Split VertexRDD tests; fix #114
Split AnalyticsSuite into algorithms suites
Merge pull request #115 from ankurdave/test-reorg

Reorganize unit tests; improve GraphSuite test coverage
Write mapTriplets test
Test EdgePartition2D
Test all methods on EdgePartition
Merge pull request #117 from ankurdave/more-tests

More tests
Test VertexPartition and fix bugs
Merge pull request #118 from ankurdave/VertexPartitionSuite

Test VertexPartition and fix bugs
Merge pull request #116 from jianpingjwang/master

remove unused variables and fix a bug