examples: Added 'Interesting' tag to examples

* Added //! [Interesting] tag to all examples which were missing this
* Removed windows CR/LF
* Removed pointers from examples since these are not needed.  Removed
  try/catch which seems to be there only to handle failing pointers and
  return value from main.
* Reformatted examples when the formatting was wonky/inconstant.

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

examples/c++/ads1x15-ads1015.cxx

@@ -49,6 +49,7 @@ void stop()
 
 int main()
 {
+    //! [Interesting]
     long id = 0; // Sample number
     string fileName = "./ads1015.data"; // Output filename
     ofstream f;
@@ -97,6 +98,7 @@ int main()
         return 1;
     }
     cout << "Wrote " << id << " samples to file: " << fileName << endl;
+    //! [Interesting]
     return 0;
 }