[3.6] NEWS for 30777 (GH-2576) (#2579)

(cherry picked from commit aaa917f)
diff --git a/Misc/NEWS.d/next/IDLE/2017-07-04-22-45-46.bpo-30777.uxzlMB.rst b/Misc/NEWS.d/next/IDLE/2017-07-04-22-45-46.bpo-30777.uxzlMB.rst
new file mode 100644
index 0000000..b7118bf
--- /dev/null
+++ b/Misc/NEWS.d/next/IDLE/2017-07-04-22-45-46.bpo-30777.uxzlMB.rst
@@ -0,0 +1,2 @@
+IDLE: configdialog - Add docstrings and fix comments. Patch by Cheryl
+Sabella.