correctly find packages in setup.cfg

Author: ianhi

setup.cfg

@@ -4,11 +4,15 @@ author=Ian Hunt-Isaak
 author_email[email protected]
 url = https://github.com/ianhi/mpl-point-clicker
 license=BSD 3-Clause
-packages = find:
 long_description = file: README.md
 long_description_content_type = text/markdown
 
 [options]
+packages = find:
+
+keywords =
+    Matplotlib
+
 install_requires =
     matplotlib
     numpy