added new states and transitions
changed error messaged when opening file failed
added new transitions
removed debug code from node.c
fixed major bug in adding transition/ hacked a fix for an alien bug
added new token type
changed add_transition signature in node header file
fixed to_hexa function
changed return values of get_token function
changed parameter passed to add_transition
small code changes in main.c file
changed type of two states and removed one transition
include .o files for compilation
include file read when testing