temporary solution for pip 10 internals moving to pip._internal

setup.py

@@ -13,7 +13,12 @@ from __future__ import unicode_literals
 import io
 from os import path
 
-from pip.req import parse_requirements
+try:
+    from pip.req import parse_requirements
+except ImportError:
+    # pip >= 10
+    from pip._internal.req import parse_requirements
+
 from setuptools import find_packages, setup