HEI: initial "hello world"

Change-Id: I8d4f1994a58afdf24558bb528de632de0511c75c
diff --git a/hei_isolator.hpp b/hei_isolator.hpp
new file mode 100644
index 0000000..a0dd6a7
--- /dev/null
+++ b/hei_isolator.hpp
@@ -0,0 +1,26 @@
+
+#pragma once
+
+#include "hei_user_interface.hpp";
+
+namespace HEI
+{
+
+class Isolator
+{
+  public:
+
+    Isolator();
+
+    ~Isolator();
+
+    void initialize();
+
+    void isolate();
+
+  private:
+
+}; // end class Isolator
+
+}; // end namespace HEI
+