try to fix setuptools issue

Author: Davide Moro

{{cookiecutter.project_slug}}/requirements.txt

@@ -36,6 +36,7 @@ pytz==2017.2
 PyYAML==3.12
 requests==2.11.1
 selenium==3.4.3
+setuptools==3.6.2.2
 simplejson==3.11.1
 six==1.10.0
 snowballstemmer==1.2.1

{{cookiecutter.project_slug}}/tox.ini

@@ -7,7 +7,6 @@ passenv = *
 deps=
     pip
     wheel
-    setuptools==3.6.2.2
     -rrequirements.txt
     -e.
 commands=py.test --junitxml=junit-{envname}.xml {posargs:{{cookiecutter.project_slug}}}