update license in setup file (#45)

* update setup.py license

Author: chkp-edenbr

setup.py

@@ -18,7 +18,7 @@
     classifiers=[
         "Programming Language :: Python :: 2.7",
         "Programming Language :: Python :: 3",
-        "License :: OSI Approved :: Apache License",
+        "License :: OSI Approved :: Apache Software License",
         "Operating System :: OS Independent",
     ],
     metadata_version="1.2",