Wisemonk search functionality

Thinking of something like this for the config file.

// slack token
token: token
discoursekey: key
discourseprefix: http://discuss.hypermode.com
channels:
  id: G1D59039B
  // in minutes
  interval: 10
  maxmsg: 20
  // catgories to perform search on.
  categories: Dev,Users,Reading
  // category in which the topic would be created on Discourse.
  discoursecat: Dev
  

More inclined towards using json for the config or should we have our own custom parser for this. Thoughts @mrjn ?