updated for older setuptools

requirements.txt

@@ -1,4 +1,4 @@
 requests
 lxml
 beautifulsoup4
-enum34; python_version == '2.7'
+enum34; python_version < '3.4'

setup.py

@@ -4,22 +4,24 @@
 """
 Setup script for fbchat
 """
-
-
 import os
 try:
     from setuptools import setup
 except ImportError:
     from distutils.core import setup
 
-
 with open('README.rst') as f:
     readme_content = f.read().strip()
 
-try:
+requirements = [
-    requirements = [line.rstrip('\n') for line in open(os.path.join('fbchat.egg-info', 'requires.txt'))]
+    'requests',
-except IOError:
+    'lxml',
-    requirements = [line.rstrip('\n') for line in open('requirements.txt')]
+    'beautifulsoup4',
+]
+
+extras_requirements = {
+    ':python_version < "3.4"': ['enum34']
+}
 
 version = None
 author = None
@@ -75,6 +77,7 @@ setup(
     include_package_data=True,
     packages=['fbchat'],
     install_requires=requirements,
+    extras_require=extras_requirements,
     url=source,
     version=version,
     zip_safe=True,