memory: Hide all copy/assignment ops for class w/heap allocation

Many of the UPM libraries allocate space on the heap but do not
explicitly handle copying and assignment.  This commit uses C++11 delete
to forbit both the copy and assignment operator for these classes.

The C++ examples which used assignment operators to initialize class
instances were also updated since it did not appear necessary in those
cases to use the assignment operator.

Signed-off-by: Noel Eck <noel.eck@intel.com>

src/si7005/si7005.hpp

@@ -125,6 +125,10 @@ class SI7005 : public ITemperatureSensor, public IHumiditySensor {
         void disableFastConversionMode();
 
     private:
+        /* Disable implicit copy and assignment operators */
+        SI7005(const SI7005&) = delete;
+        SI7005 &operator=(const SI7005&) = delete;
+
         int m_controlAddr;
         int m_bus;
         int m_pin;