Updated project requirements

Author: pawelad

requirements/common.txt

@@ -1,4 +1,4 @@
-pillow
-tinycss
-six
-requests
+pillow>=3.0.0
+tinycss>=0.3
+six>=1.10.0
+requests>=2.8.1

setup.py

@@ -35,20 +35,6 @@ def run_tests(self):
     description = ''
 
 
-# Requirements based on Python version
-if sys.version_info >= (3, 0):
-    # Python 3
-    install_requires = ['pillow>=3.0.0',
-                        'tinycss>=0.3',
-                        'six>=1.10.0',
-                        'requests>=2.8.1']
-else:
-    # Python 2
-    install_requires = ['pillow>=2.8.1',
-                        'tinycss>=0.3',
-                        'six>=1.10.0',
-                        'requests>=2.8.1']
-
 setup(
     name='icon_font_to_png',
     url='https://github.com/Pythonity/icon-font-to-png',
@@ -62,7 +48,12 @@ def run_tests(self):
     packages=['icon_font_to_png'],
     tests_require=['tox'],
     cmdclass={'test': Tox},
-    install_requires=install_requires,
+    install_requires=[
+        'pillow>=3.0.0',
+        'tinycss>=0.3',
+        'six>=1.10.0',
+        'requests>=2.8.1'
+    ],
     extras_require={
         'testing': ['pytest'],
     },