-rcrawler/requirements.txt
simplejson==3.8.2
flake8==2.6.0
pylint==1.5.6
pytest-cov==2.2.1

-rcrawler/requirements.txt
simplejson==3.8.2
flake8==2.6.2
pylint==1.6.2
pytest-cov==2.3.0

Update flake8, pylint, and pytest-cov
Update flake8, pylint, and pytest-cov

Signed-off-by: 899de438ba6fab77f5af6e1221688a0bf50c9c1f@bluewin.ch