Added emphasis to README and Install guide warnings about Windows optional dependency failures.
Now accepting a Node-style callback as the last param to client methods.
Internal changes to fix failing tests.
Removed options as the 2nd param for client methods.
Added tests for callbacks to client operations.
You must now call send() on a request if you omit the callback.
The operation callback can now be the first argument when params are left out when calling client methods.
Update README example to use Node-style callback
Document AWSRequest.send() and update examples to use send()
Document new node-style callbacks and send() method
Document callback syntax on service operation methods
Fix formatting error in README
Updated EC2 API to version 2012-10-01 and fixed a systemic camel-case issue for param names.
No longer squashing HTTP errors.
Corrected documentation about format of S3 request payloads (getObject, putObject, etc).
Merge branch 'node-callbacks'

Fixes #2
Added documentation for SimpleWorkflow parameters.
Fix heading levels in MakingRequests.md
Add documentation for custom bindings in MakingRequests.md guide section
Fixed markdown typo in guides.