Include requirements in setup.py

setup.py

@@ -1,5 +1,10 @@
+import os
 from setuptools import setup, find_packages
 
+requirements_txt = os.path.dirname(os.path.realpath(__file__)) + '/requirements.txt'
+with open(requirements_txt, "rt") as f:
+    install_requires = f.read().splitlines()[1:]
+
 setup(name='grafoleancollector',
       version='@@VERSION@@',
       url='https://gitlab.com/grafolean/grafolean-collector',
@@ -9,4 +14,5 @@
       description='Common utilities for creating (controlled) collectors for Grafolean',
       packages=find_packages(exclude=['tests']),
       long_description=open('README.md').read(),
+      install_requires=install_requires,
       zip_safe=False)