code: function iterateFiles (dir, options, cb) {
    var iterateOptions = {
      ext: [], // extensions to look for
      dirs: false, // do callback for dirs too
      skip_: true, // skip files & dirs starting with _
      recursive: true // do a recursive find
    }
  
    options = deepMerge(iterateOptions, options)
    // console.log('options: ' + JSON.stringify(options))
    iterateRecurse(dir, options, cb)
  }
docs: Iterates through a given folder and calls cb for each file found based on given options