Merge pull request #25 from wpreul/master

Update to use lab v4
Added documentation for convenience methods, toReadableStream, and parseCacheControl
Add documentation for request and read.
Add indicator of optional parameter.
Merge pull request #26 from totherik/master

Document API, parameters, and helper methods.
Correct copypasta errors in convenience method docs.
Merge pull request #27 from totherik/copypasta

Correct copypasta errors in convenience method docs.
Upping version
Update readme to clarify optional options argument.
Clarify wording.
Merge pull request #30 from totherik/doc-optional-params

Clarify optional options argument.
Working on version 3.0.0
Read now requires 3 arguments