Added ability to pass environment to constructor, map, spawn, and reduce
Extend to node as well
Added tests
Merge branch 'master' into feature/pass-environment, Fixes #59
Ignore npm debug log
delete npm debug log
Changed env to be included on 'global' variable in closure
Update tests for env
Added test for overriding globals
Merge branch 'feature/pass-environment'

Conflicts:
	.gitignore
Add passing env to readme