Pr/40 (#45)

* Added basic Aquastream Hardware Support using HidLibrary from mikeobrien (https://github.com/mikeobrien/HidLibrary)

* * Using hidlibrary from Nuget and fixing ProductName.
* Added missing string Format for Gadget.
* Changed variable names to follow style.
* Added new newlines. Make AquacomputerGroup public accessible.
* Added aquacomputer Icon after they allowed me to use it ;-)

* Corrected spelling
Corrected Variable names

* Removed External/HidLibrary

* Aquastream

- Remove Debug.

* A

- Clean up remains.

GUI/PlotPanel.cs

@@ -150,6 +150,7 @@ namespace OpenHardwareMonitor.GUI {
       units.Add(SensorType.Factor, "1");
       units.Add(SensorType.Power, "W");
       units.Add(SensorType.Data, "GB");
+      units.Add(SensorType.Frequency, "Hz");
 
       foreach (SensorType type in Enum.GetValues(typeof(SensorType))) {
         var axis = new LinearAxis();