Fixing bug in setup.py

Author: pavanky

setup.py

@@ -20,7 +20,7 @@
     author="Pavan Yalamanchili",
     author_email="pavan@arrayfire.com",
     name="arrayfire",
-    version="3.4.0"
+    version="3.4.0",
     description="Python bindings for ArrayFire",
     license="BSD",
     url="http://arrayfire.com",