Adding statement about dpc_common file and where to find them in README file. Change copyright to 2020

Signed-off-by: avillarr <[email protected]>

Author: Alberto-Villarreal

DirectProgramming/DPC++/StructuredGrids/iso2dfd_dpcpp/README.md

@@ -66,7 +66,7 @@ Base Toolkit Get Started Guide (https://devcloud.intel.com/oneapi/get-started/ba
 Perform the following steps:
 1. Build the program using the following `cmake` commands. 
 
-  ```    
+   ```    
     cd iso2dfd_dpcpp &&  
     mkdir build &&  
     cd build &&