Print reason

Example:
$ ./codespell.py -d example/dict.txt example/code.c

example/code.c:9: clas  ==> class  | disabled due to name clash in c++
example/code.c:10: tis  ==> this
example/code.c:14: opem  ==> open
example/code.c:16: buring  ==> burying, burning, burin, during
example/code.c:17: clas  ==> class  | disabled due to name clash in c++