Add npm metadata: files, homepage, bugs, and repository.
Added group()
Merge pull request #29 from evocateur/npm-metadata

Add npm metadata: files, homepage, bugs, and repository.
group() by null should throw error, use existing method for lambda
Added pluck()
Added pluck error test case, focused object logic
switch to using 1 instead of [1] in test case for pluck
code style changes to test suite
small tweaks to layout in lib/index.js
bump minor version
rebuild docs
Added cstr param to enable simple stream trace logs
Fixed typo in group() comments
Revert 98c02df..a9f8bb6

This rolls back to commit 98c02df24477353de1f5ef13b55c1d014020666c.
Fixed typo in group() docs
added isStream method
rebuild docs
bump minor version
Merge pull request #31 from DveMac/master

Added group()
rebuild docs and bump minor version