Readded README

If request method is not POST return HTTP 405 in order to simplify co…

…nfiguration.

Compatibility with nginx API 0.8.25 and greater

Compatibility with nginx API 0.8.11

Stick to versioning scheme of 0.7.52

Recreated tag for version 2.0.8

Added label for version 2.1.1

Added tag for version 2.0.7

Added tag for version 2.1.0

Tag for version 2.0.6