Alpha version use recommendation in readme

[mijofr]

On 2016-10-28, the README was updated to state that users should use the alpha versions (3.3.7-alpha-2) and that the stable versions are not ready for use. On 2016-11-22, 3.3.7 stable was pushed to nuget. Could the README be updated to clarify which specific versions are recommended for use in light of this, and if the stable 3.3.7 push is recommended for production use or if the alpha recommendation was expected to still apply.

[ygoe]

This project doesn't seem to be active anymore. :-(