Add PULL_REQUEST_TEMPLATE.md communicating the unmaintained status of this package

cvrebert · cvrebert · commit f4763d52ad21 · 2016-03-07T02:45:09.000-08:00
[ci skip]
diff --git a/PULL_REQUEST_TEMPLATE.md b/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,5 @@
+# [**THIS PACKAGE IS CURRENTLY UNMAINTAINED!**](https://github.com/twbs/grunt-css-flip/blob/master/README.md#this-package-is-no-longer-maintained)
+## ALL PULL REQUESTS WILL BE IGNORED!
+
+If you wish to take over ownership of this package,
+see https://github.com/twbs/grunt-css-flip/blob/master/README.md#this-package-is-no-longer-maintained
