profiler doesn't cd to current directory

[oleksii-sl]

profiling script should cd to current directory because currently all relative path of profiled app are broken

e.g. if I do this:

import sys, os

PROJECT_PATH = os.path.normpath(os.path.join(sys.modules[__name__].__file__,'../'))

I will get wrong path and won't be able to add needed modules

currently __file__ reference points to: python2.7/site-packages/profiling/__main__.py