CONTRIBUTING.md

JS guidelines

1. All anonymous functions must be arrow functions.

   // This is ok
   utils.ajaxGet('/ajax/episode/info', params)
     .then(resp => {
       resolve(JSON.parse(resp))
     })
     .catch(err => {
       reject(err)
     })
     
   // This is NOT ok. Arrow functions looks
   // much cleaner for this purpose.
   utils.ajaxGet('/ajax/episode/info', params)
     .then(function(resp){
       resolve(JSON.parse(resp))
     })
     .catch(function(err){
       reject(err)
     })