Request contributors to give reasons for rule violations

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,10 +1,13 @@
 *Replace this line with your commit message! Please provide a description of your pull request*
 
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+---
+
+All contributions to the kicad library must follow the [KiCad library convention](http://kicad-pcb.org/libraries/klc/)
 
 Thanks for creating a pull request to contribute to the KiCad libraries! To speed up integration of your PR, please check the following items:
 
 - [ ] Provide a URL to a datasheet for the footprint(s) you are contributing
 - [ ] An example screenshot image is very helpful 
 - [ ] If there are matching symbol or 3D model pull requests, provide link(s) as appropriate
 - [ ] Check the output of the Travis automated check scripts - fix any errors as required
+- [ ] Give a reason behind any intentional library convention rule violation.