Benchmark scripts updated to pull from S3
removal of old scripts and configs
Add benchmarks directory and readme.
handle frame subset selection & assignment
Merge branch 'master' of github.com:0xdata/h2o
added base port to config
Merge branch 'master' of https://github.com/0xdata/h2o
directory creation errors fix
Merge branch 'master' of https://github.com/0xdata/h2o
minor fixes to scripts
added gbm and gbm grid
move runit_RF to last.
variable arg parsing & more

drop Op2 & Op1 for plain Op
parse variable-arg counts
implement 'c' operator
test for pure fcns
add general expansion operators to apply scalars to 2-d arrays
Merge branch 'master' of github.com:0xdata/h2o
added pcr doc for R.
Merge branch 'master' of https://github.com/0xdata/h2o
adding R doc
Merge branch 'master' of github.com:0xdata/h2o
Fixed job runtime and dead links in browser
Merge branch 'master' into jobs