Merge pull request #16 from snoweye/master

Ready to CRAN
Merge pull request #17 from snoweye/master

0.2-0 final
Merge pull request #18 from snoweye/master

spmd and master/workers done
10.02.13 minor addendum to debugging section of vignette
10.02.13 updated section referencing command
10.02.13 updated fig referencing
Merge pull request #5 from RBigData/master

update