Update README

Author: bambocher

setup.py

@@ -247,7 +247,7 @@ def run(self):
         'Topic :: Multimedia :: Sound/Audio :: Speech'
     ],
     license='BSD',
-    keywords=['sphinxbase', 'pocketsphinx'],
+    keywords='sphinxbase pocketsphinx',
     test_suite='tests',
     include_package_data=True,
     zip_safe=False