Manage python3 compatibility

- Use future module to allow python2/3 compatibility.
- New dependencies added future and configparser.

examples/__init__.py

@@ -1 +1,8 @@
-__author__ = 'deva'
+# coding=utf-8
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+__author__ = 'uggla'