Configuration Changes

-Changed include hierarchy to consolidate #includes statements
-Added "reference" files to README to reflect the "Important Files"
folder in project
Code-Hardware Configuration and CAN Skeleton

-Added Hardware configuration to pre-processor directives within
system.h;
Should assist if project must change IDEs.

-Added function prototypes for CAN initialization and CAN1 module ISR

-Consolidated #include statements some more:  system.h for hardware
configuration and hardware-accessed items such as exceptions, and user.h
for application-specific globals, software configuration, etc.
"system.h" is included in "user.h"