added IDataconverter interface

ProftaakRH/DataConverter.cs

@@ -2,9 +2,24 @@
 using System.Collections.Generic;
 using System.Text;
 
-namespace ProftaakRH
+namespace Hardware
 {
-    class DataConverter
+    class DataConverter : IDataConverter
     {
+        public void Bike(byte[] bytes)
+        {
+            throw new NotImplementedException();
+        }
+
+        public void BPM(byte[] bytes)
+        {
+            throw new NotImplementedException();
+        }
+    }
+
+    interface IDataConverter
+    {
+        void BPM(byte[] bytes);
+        void Bike(byte[] bytes);
     }
 }