updated issues template

ISSUE_TEMPLATE.md

@@ -1,17 +1,26 @@
-**All** bug reports must contain a test case using one of **our** Codepen templates;  Bug reports without one will be summarily closed:
-- `v3` Codepen template - http://codepen.io/rosskevin/pen/VvRgrN 
-- `v4` Codepen template - http://codepen.io/rosskevin/pen/eJMMVB
+<!--
 
-----
+All bug reports must contain a test case using our Codepen template;
+Bug reports without it will be summarily closed:
+- Codepen template - http://codepen.io/rosskevin/pen/eJMMVB
 
-#### Test Case 
-(Codepen URL here) 
+Make sure to search for existing issues before opening a new one.
+
+If you are experiencing an issue with the version 3 of this theme, you must know
+that we are no longer maintaining the old version and we are only accepting PR to
+fix existing issues. New issues without an associated PR will be closed.
+More info at https://github.com/FezVrasta/bootstrap-material-design/issues/1004
+
+-->
+
+#### Test Case
+_(Codepen URL here)_
 
 #### Summary
-A summary of the issue and the browser/OS environment in which it occurs. If suitable, include the steps required to reproduce the bug.
+_A summary of the issue and the browser/OS environment in which it occurs. If suitable, include the steps required to reproduce the bug._
 
 #### Expected result
-Description of expectation, mockup, etc.
+_Description of expectation, mockup, etc._
 
 #### Additional Information
-Any other information you want to share that is relevant to the issue being reported. This might include the lines of code that you have identified as causing the bug, and potential solutions (and your opinions on their merits).
+_Any other information you want to share that is relevant to the issue being reported. This might include the lines of code that you have identified as causing the bug, and potential solutions (and your opinions on their merits)._