Added version check again

Author: svisser

setup.py

@@ -1,3 +1,9 @@
+import sys
+if sys.version_info < (2, 6):
+    print(sys.stderr, "{}: need Python 2.6 or later.".format(sys.argv[0]))
+    print(sys.stderror, "Your Python is {}".format(sys.version))
+    sys.exit(1)
+
 from setuptools import setup
 
 setup(