Merge pull request #77 from buyaa-n/comment_hummingboard

Commenting out HummingBoard default picking logic

src/System.Device.Gpio/System/Device/Gpio/GpioController.Linux.cs

@@ -42,10 +42,12 @@ namespace System.Device.Gpio
                         {
                             return new RaspberryPi3Driver();
                         }
-                        if (match.Groups[1].Value == HummingBoardHardware)
-                        {
-                            return new HummingBoardDriver();
-                        }
+                        // Commenting out as HummingBoard driver is not implemented yet, will be added back after implementation 
+                        // https://github.com/dotnet/iot/issues/76                
+                        //if (match.Groups[1].Value == HummingBoardHardware)
+                        //{
+                        //    return new HummingBoardDriver();
+                        //} 
                         return new UnixDriver();
                     }
                 }