Please add documentation and expose it

[rkmax]

[hjanuschka]

http://php.net/manual/en/book.lua.php i think this one is pretty up-to-date (atleast i think)

[rkmax]

@hjanuschka Certainly with that I am leading, but it would be great that the IDE was able to autocomplete the Lua class, as you do with Mongo, Pdo or other extensions. the IDE always indicates that the class dont exist :astonished:. obviously this is just the ide, I try to expose this documentation basing on another extension but could not :cry:, but you would have the pull request