Fix for Python 3 basestring deprecation
Fix for Python 3 basestring deprecation

nathancahill/clint,wkentaro/clint,1gitGrey/clint,tz70s/clint,glorizen/clint,wkentaro/clint,thusoy/clint,nathancahill/clint,Lh4cKg/clint,1gitGrey/clint,kennethreitz/clint