adding stability checker, linear system creator, sgd, and code to compute condition number of RowPartitionedMatrix
changed name of linear regression class, made the linear regression class extend RowPartitionedSolver, fixed some minor bugs
made miniBatchFraction a constructor argument to LeastSquaresGradientDescent, fixed bug that defined lambda inside a flatMap function in SolveManyLeastSquaresWithL2
made argument for miniBatchFraction a double, got rid of sparkHome and coresPerTask
created scripts directory, deleted Vandermonde code
fixed all the imports to be alphabetical and follow the style guide
fixed spacing in comments, added large comment to createLinearSystems, deleted unecessary imports
removed unecessary asInstanceOf
Merge branch 'master' of https://github.com/rolloff/ml-matrix into rolloff-master

Conflicts:
	src/main/scala/edu/berkeley/cs/amplab/mlmatrix/BlockQR.scala
Fix BlockCoordinateDescent
Merge branch 'rolloff-master'