Fixes final bug in alpha series: #2903364: Switch the Lambda function from PUT to POST. This is the first beta release—it is confirmed up and running on my test site, and I'll make any final 1.x tweaks over the course of any more betas to be released.
This release switches the REST API endpoint from a PUT request to a POST request (to conform to typical Drupal entity API conventions), and cleans up some documentation.
