Fixes compatibility issue with 0.9 and small README change

[niedbalski]

Without this change, the following exception is raised:

Error: loader.lua:161: attempt to call field 'enumerate' (a nil value) stack traceback: loader.lua:161: in function 'init' main.lua:9: in function 'load' [string "boot.lua"]:406: in function <[string "boot.lua"]:399> [C]: in function 'xpcall'

This is due to incompatibility between older versions and current 0.9 release.

Also included a couple of minor README changes