…r limit for the specific show's title.

Changed hard limit in DataMapper class in suggestion.rb from 40 to the value of live show's limit. Not sure of workflow. May be a problem there is no live show in data.json?
Also bumped setting LIVE_URL to immediately after call to Dotenv.load, otherwise it gets set too late to
initialize the Suggestion class.

shows.json example:

{
  "shows": [
    {
      "rss":"http://feeds.feedburner.com/BsdNowHd",
      "url": "bn",
      "title": "BSD Now"
    },
    {
      "rss":"http://feeds.feedburner.com/coderradiovideo",
      "url": "cr",
      "title": "Coder Radio",
      "limit": 10
    }
  ]
}

…alid slug, suggestions.rb crashes. Added a condition for when the live show cannot be found so limit defaults to 40.