Improve README.

Delete posix.sys object files during clean.

No reason these requires should be available everywhere.

readme: Grammar corrections.

build: Fix Makefile of C modules.

build: This should be checking for the string true.

readme: Improve and update documentation according to recent changes.

Spelling and numbering mistakes. Correct version number. Missing line…

… break.

Update to reflect the new Lua version.

readme: Add lsocket details.