updates for join
Merge pull request #6 from soloman817/master

fix mem bug
performance data for scan, bulkInsert, & bulkRemove
switching to dirac machine
update from dirac
changed csv output a little
new output from dirac
excel files for dirac performance
nsight timing output for f#
kernel timing for bulk insert

int32 and float64
sorted search works
added benchmark sorted search & stats

added mgpu stats for 2 different search benchmarks with 4 types each.
About to run benchmarks for output
update for sorted search. still have problem

with float64 and int64