Basic setup documentation

[pjarnhus]

Hi,

Thank you for making this plugin. It looks extremely awesome. Is there documentation somewhere for a very basic setup? I have never used a lua plugin before, so I have a hard time connecting the dot between the install of the plugin and the definition of snippets in lua, both in the README. Should the lua code go in a separate file or how does that work?

If you have an example or could point me in the right direction, I would be happy to create a pull request with an updated README (if you find it valuable).

Thanks again for making this! I cannot wait getting started creating some neat python snippets