Sensor Objects

This includes all the sensor objects including a few
implementations, including dbus and sysfs sensors.

Change-Id: I9897c79f9fd463f00f0e02aeb6c32ffa89635dbe
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/notimpl/writeonly.hpp b/notimpl/writeonly.hpp
new file mode 100644
index 0000000..4c26fbd
--- /dev/null
+++ b/notimpl/writeonly.hpp
@@ -0,0 +1,15 @@
+/* Interface that implements an exception throwing write method. */
+#pragma once
+
+#include "interfaces.hpp"
+
+
+class WriteOnly: public ReadInterface
+{
+    public:
+        WriteOnly()
+            : ReadInterface()
+        { }
+
+        ReadReturn read(void) override;
+};