Update tox env setup

Author: rmk135

tox.ini

@@ -3,8 +3,12 @@ envlist=
  coveralls, pylint, flake8, pydocstyle, py26, py27, py33, py34, py35, pypy, pypy3
 
 [testenv]
+whitelist_externals=make
 deps=
- unittest2
+ -rrequirements-dev.txt
+install_command=
+ make compile
+ pip install {opts} {packages}
 commands=
  unit2 discover tests []