dedicated function to init argparser
regexp version
Knowledge Base links updated

The site is not available as for know but I am
updating its original links according to what
I have found in the printed version of the book:
http://tinyurl.com/o2xs2a4

The pattern corrected automatically this way:
./replace.py -r '\/knowledge-base\/index\.phtml\/' \
'http://www.faqts.com/knowledge-base/index.phtml/'
Merge branch 'mylinksupdate' of github.com:/jkedra/diveintopython2 into mylinksupdate