add proper python packaging

Signed-off-by: Tomas Tomecek <[email protected]>

Author: TomasTomecek

requirements.txt

@@ -0,0 +1,2 @@
+PyYAML
+tabulate

setup.py

@@ -4,21 +4,28 @@
 
 from setuptools import find_packages, setup
 
+
+def get_requirements():
+    with open("./requirements.txt") as file:
+        return file.readlines()
+
 # https://packaging.python.org/guides/single-sourcing-package-version/
 version = {}
 with open("./ansible_bender/version.py") as fp:
     exec(fp.read(), version)
 
 long_description = ''.join(open('README.md').readlines())
 
+
 setup(
     name='ansible-bender',
     version=version["__version__"],
     description="A tool which builds container images using Ansible playbooks.",
     long_description=long_description,
     # long_description_content_type='text/markdown',
     packages=find_packages(exclude=['tests']),
-    install_requires=[],
+    python_requires='>=3.6',
+    install_requires=get_requirements(),
     entry_points='''
         [console_scripts]
         ab=ansible_bender.cli:main