Merge pull request #5 from wizeline/pip10

Make it pip10 compatible

README.md

@@ -71,7 +71,7 @@ Clone this respository and create the virtual environment:
 ```
 $ git clone https://github.com/wizeline/sqlalchemy-pagination
 $ cd sqlalchemy-pagination
-$ mkvirtualenv sqlalchemy-pagination
+$ mkvirtualenv -p python3 sqlalchemy-pagination
 $ workon sqlalchemy-pagination
 $ pip install -r requirements-dev.txt
 $ pip install tox

requirements-dev.txt

@@ -7,4 +7,4 @@ nose==1.3.7
 pep8-naming==0.3.3
 rednose==1.1.0
 sure==1.2.24
-factory-boy==2.6.1
+factory-boy==2.10.0

setup.py

@@ -1,5 +1,10 @@
 import re
-from pip.req import parse_requirements
+
+try:  # for pip >= 10
+    from pip._internal.req import parse_requirements
+except ImportError:  # for pip <= 9.0.3
+    from pip.req import parse_requirements
+
 from setuptools import setup, find_packages