renaming package name in setup.cfg

setup.cfg

 [metadata]
-name = TutorEnvs
+name = tutorenvs
 author = Christopher J. MacLellan
 author-email = christopher.maclellan@drexel.edu
 summary = Headless tutor environments for training simulated students.
@@ -20,7 +20,7 @@ classifier =
 
 [files]
 packages =
-    TutorEnvs
+    tutorenvs
 
 [bdist_wheel]
 universal=1