Build fix

Nginx upload module fix SIGSEGV

Code used in Raritan Nginx 1.4.2 build 1

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