Add require and import to elixirInclude and highlight them
rm __MAIN__
support __DIR__
Merge pull request #22 from mururu/dir

Remove __MAIN__ and support __DIR__
Merge pull request #24 from iurifq/include-require-highlight

Add require and import to elixirInclude and highlight them
Add some def.* keywords and respective declarations
Add remaining defs with declarations and highlight
Do not highlight require and import when followed by [?!]