Relicense to MIT-0 (#16)

Merge pull request #8 from Rayz0r/batchcalc

Updated bucket to sane default, updated README to be more explicit on bucket configuration

Default batch size now takes into account lambda concurrency

Boto Connection Pool now configurable

Merge pull request #7 from giedri/master

Moving lambda read timeout to config

X-Ray support added

Merge pull request #5 from pshevtsov/patch-1

Minor markdown corrections

Merge pull request #3 from homingli/master

fixed sed command to replace in file

add the step exporting to env var, simplified create delete role scripts output

added create delete iam role script, edit readme with steps

Merge branch 'master' of https://github.com/awslabs/lambda-refarch-mapreduce