Use `@rules_python//python/runfiles` for examples and tests (#614)

Co-authored-by: Alex Eagle <eagle@post.harvard.edu>
diff --git a/examples/pip_parse/WORKSPACE b/examples/pip_parse/WORKSPACE
index be1c8c7..986e4fb 100644
--- a/examples/pip_parse/WORKSPACE
+++ b/examples/pip_parse/WORKSPACE
@@ -1,4 +1,4 @@
-workspace(name = "example_repo")
+workspace(name = "rules_python_pip_parse_example")
 
 local_repository(
     name = "rules_python",