Add pricing fetches. Add unit test.

MarketData/MarketDataLib/Helper/MarketDataHelper.cs

@@ -5375,7 +5375,12 @@ namespace MarketData.Helper
     //********************************************************************************************************************************************************************************************************
     // ******************************************************************************** H I S T O R I C A L  P R I C I N G  Y A H O O  *********************************************************************
     //********************************************************************************************************************************************************************************************************
-
+    /// <summary>
+    /// GetDailyPrice - This feed returns a single price for the given pricing date.
+    /// </summary>
+    /// <param name="symbol"></param>
+    /// <param name="pricingDate"></param>
+    /// <returns></returns>
     public static Price GetDailyPrice(String symbol, DateTime pricingDate)
     {
       if (null == symbol) return null;
@@ -5396,6 +5401,13 @@ namespace MarketData.Helper
       return price;
     }
 
+    /// <summary>
+    /// GetDailyPrices - Retrieve prices from Yahoo.  This feed can retrieve historical prices from Yahoo as well as current day price
+    /// </summary>
+    /// <param name="symbol"></param>
+    /// <param name="startDate"></param>
+    /// <param name="endDate"></param>
+    /// <returns></returns>
     public static Prices GetDailyPrices(String symbol, DateTime startDate, DateTime endDate)
     {
       HttpNetResponse httpNetResponse=null;