Bump version to 1.3.1.

Author: Jeff-Meadows

setup.py

@@ -61,7 +61,7 @@ def main():
         install_requires.append('ordereddict>=1.1')
     setup(
         name='boxsdk',
-        version='1.3.0',
+        version='1.3.1',
         description='Official Box Python SDK',
         long_description=open(join(base_dir, 'README.rst')).read(),
         author='Box',