anchor.diff:  HOST: http://prometheus-api.herokuapp.com/
  - 
  +
   --- Prometheus API ---
  - 
  +
   -- Exchange Resources --
   
   List all stock exchanges
  
positive.code: < Content-Type: application/json
  {
    "commodities": [], 
    "id": 1, 
    "name": "New York Stock Exchange", 
    "symbol": "NYSE", 
    "utc_created": "2013-05-18T04:08:32.702383", 
    "utc_updated": "2013-05-18T04:08:32.702432"
  }
   
  Add new stock exchanges
  POST /exchange
  > Content-Type: application/json
  
negative.code: < 200
  < Content-Type: application/json
  {
    "total_pages": 1, 
    "objects": [
      {
        "commodities": [], 
        "id": 1, 
        "name": "New York Stock Exchange", 
        "symbol": "NYSE", 
        "utc_created": "2013-05-18T04:08:32.702383", 
        "utc_updated": "2013-05-18T04:08:32.702432"
      } 
    ], 
    "num_results": 1, 
    "page": 1
  }
  
  List a particular stock exchange
  