Update version number to 1.6.4

Author: loganknecht

README.md

@@ -1,7 +1,7 @@
 [![Build Status](https://travis-ci.org/splunk/splunk-sdk-python.svg?branch=master)](https://travis-ci.org/splunk/splunk-sdk-python)
 # The Splunk Software Development Kit for Python
 
-#### Version 1.6.3
+#### Version 1.6.4
 
 The Splunk Software Development Kit (SDK) for Python contains library code and 
 examples designed to enable developers to build applications using Splunk.

examples/searchcommands_app/setup.py

@@ -439,7 +439,7 @@ def run(self):
     setup(
         description='Custom Search Command examples',
         name=os.path.basename(project_dir),
-        version='1.6.3',
+        version='1.6.4',
         author='Splunk, Inc.',
         author_email='devinfo@splunk.com',
         url='http://github.com/splunk/splunk-sdk-python',

splunklib/__init__.py

@@ -16,6 +16,5 @@
 
 from __future__ import absolute_import
 from splunklib.six.moves import map
-__version_info__ = (1, 6, 3)
+__version_info__ = (1, 6, 4)
 __version__ = ".".join(map(str, __version_info__))
-