Update pypi with latest code

Signed-off-by: Chiradeep Vittal <chiradeepv@gmail.com>

Author: chiradeep

setup.py

@@ -11,16 +11,16 @@
 
 setup(
     name='dyndbmutex',
-    version='0.3.0',
+    version='0.4.0',
     license='ASL v2.0',
     packages=['dyndbmutex'],
     description='Mutual Exclusion using AWS DynamoDB',
     long_description=README,
     url='https://github.com/chiradeep/dyndb-mutex',
-    download_url='https://github.com/chiradeep/dyndb-mutex/releases/download/v0.30/dyndbmutex-0.3.0.tar.gz',
+    download_url='https://github.com/chiradeep/dyndb-mutex/releases/download/v0.40/dyndbmutex-0.4.0.tar.gz',
     author='chiradeep',
     author_email='chiradeep@apache.org',
-    install_requires=['boto3>=1.4.1'],
+    install_requires=['boto3>=1.9.0'],
     classifiers=[
         'Intended Audience :: Developers',
         'License :: OSI Approved :: Apache Software License',