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/mcp9808/mcp9808.hpp

@@ -314,6 +314,10 @@ namespace upm {
             uint16_t getDevicedId();
 
         private:
+            /* Disable implicit copy and assignment operators */
+            MCP9808(const MCP9808&) = delete;
+            MCP9808 &operator=(const MCP9808&) = delete;
+
             std::string m_name;
             bool m_celsius;
             bool m_tcrit;