Add ISSUE_TEMPLATE.md communicating the unmaintained status of this package

cvrebert · cvrebert · commit 7a87917df520 · 2016-03-07T02:40:36.000-08:00
diff --git a/ISSUE_TEMPLATE.md b/ISSUE_TEMPLATE.md
@@ -0,0 +1,2 @@
+# [**THIS PACKAGE IS CURRENTLY UNMAINTAINED!**](https://github.com/twbs/grunt-css-flip/blob/master/README.md#this-package-is-no-longer-maintained)
+## Your issue WILL BE IGNORED unless it's regarding taking over ownership of this package.

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	`+# [THIS PACKAGE IS CURRENTLY UNMAINTAINED!](https://github.com/twbs/grunt-css-flip/blob/master/README.md#this-package-is-no-longer-maintained)`
	`2`	`+## Your issue WILL BE IGNORED unless it's regarding taking over ownership of this package.`