Added .editorconfig and .jshint files and fixed bot.js to validate
Add '!seen' function
Seen module improvements

+ Move Seen module out to its own file
+ Refactor listener functions not being declared in line in the init
  function
+ Added support for 'kick', 'nick', and 'part' events
Moving seen.js to plugins folder
Added .gitignore, config.js, and moved config
Deleting node_modules/seen.js