Add a note about how to include an example against master (chartjs#6107)

Author: benmccann

.github/ISSUE_TEMPLATE/BUG.md

@@ -21,13 +21,20 @@ labels: 'type: bug'
 <!-- Tell us what happens instead of the expected behavior -->
 
 ## Possible Solution
-<!-- Not obligatory, but suggest a fix/reason for the bug, -->
-<!-- or ideas how to implement the addition or change -->
+<!--
+  Not obligatory, but suggest a fix/reason for the bug,
+  or ideas how to implement the addition or change
+-->
 
 ## Steps to Reproduce (for bugs)
 <!--
   Provide a link to a live example. Bug reports MUST be submitted with an
   interactive example (https://codepen.io/pen?template=JXVYzq).
+
+  If filing a bug against `master`, you may reference the latest code via
+  https://www.chartjs.org/dist/master/Chart.min.js (changing the filename to
+  point at the file you need as appropriate). Do not rely on these files for
+  production purposes as they may be removed at any time.
 -->
 
 ## Context

docs/developers/contributing.md

@@ -72,6 +72,6 @@ Guidelines for reporting bugs:
 
  - Check the issue search to see if it has already been reported
  - Isolate the problem to a simple test case
- - Please include a demonstration of the bug on a website such as [JS Bin](https://jsbin.com/), [JS Fiddle](https://jsfiddle.net/), or [Codepen](https://codepen.io/pen/). ([Template](https://codepen.io/pen?template=JXVYzq))
+ - Please include a demonstration of the bug on a website such as [JS Bin](https://jsbin.com/), [JS Fiddle](https://jsfiddle.net/), or [Codepen](https://codepen.io/pen/). ([Template](https://codepen.io/pen?template=JXVYzq)). If filing a bug against `master`, you may reference the latest code via https://www.chartjs.org/dist/master/Chart.min.js (changing the filename to point at the file you need as appropriate). Do not rely on these files for production purposes as they may be removed at any time.
 
 Please provide any additional details associated with the bug, if it's browser or screen density specific, or only happens with a certain configuration or data.