Add maintainer to package meta data

Author: nicolasbock

setup.py

@@ -9,6 +9,8 @@
     name="ebuildtester",
     author="Nicolas Bock",
     author_email="[email protected]",
+    maintainer="Nicolas Bock",
+    maintainer_email="[email protected]",
     description="A container approach to test a Gentoo package within a clean stage3 container",
     license="BSD",
     url="http://ebuildtester.readthedocs.io/",