- Add PULL_REQUEST_TEMPLATE

- Comment out texts in templates

Author: naokazuterada

.github/ISSUE_TEMPLATE.md

@@ -1,6 +1,8 @@
+<!--
 File an issue if you think you've found a bug. Please describe
 
 1. How can it be reproduced
 2. What was expected
 3. What actually occurred
 4. What version of the involved component
+-->

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,8 @@
+<!--
+You should use unit-tests for SublimeText by using [UnitTesting](https://github.com/randy3k/UnitTesting) plugin.
+
+1. Install the UnitTesting plugin
+2. Comment out or rename your own `MarkdownTOC.sublime-settings` so individual settings are not used during testing
+3. [Run tests](https://github.com/randy3k/UnitTesting-example#running-tests)
+4. Send Pull Request when tests pass
+-->