Map K for help lookup (in normal mode)
Document the global :LuaCheckSyntax and :LuaCheckGlobals commands
Make name/path of Lua interpreter configurable
Add parentheses to functions in overview of known globals
Improve interaction between automatic syntax/globals checks
Try to resolve pull request #23 (workaround for table indexes in globals.lua)

See pull request #23 on GitHub:
  https://github.com/xolox/vim-lua-ftplugin/pull/23
Use configured Lua compiler in globals.lua (reported in pull request #23)
Pull request #21: Allow module blacklisting in omni completion

See also:
 - https://github.com/xolox/vim-lua-ftplugin/issues/12
 - https://github.com/xolox/vim-lua-ftplugin/pull/21
Pull request #19: Map K for help lookup (in normal mode)
Bug fix: Respect 'lua_interpreter_path' during search path discovery
Make it possible to disable use of Lua Interface for Vim

Relevant for issue #20:
  https://github.com/xolox/vim-lua-ftplugin/issues/20