move coveragerc to setup.cfg

.coveragerc

@@ -1,11 +0,0 @@
-[run]
-branch = True
-source =
-    flask
-    tests
-
-[paths]
-source =
-    flask
-    .tox/*/lib/python*/site-packages/flask
-    .tox/pypy/site-packages/flask

setup.cfg

@@ -10,3 +10,15 @@ license_file = LICENSE
 [tool:pytest]
 minversion = 3.0
 testpaths = tests
+
+[coverage:run]
+branch = True
+source =
+    flask
+    tests
+
+[coverage:paths]
+source =
+    flask
+    .tox/*/lib/python*/site-packages/flask
+    .tox/pypy/site-packages/flask