Merge branch 'update-contributing'

* update-contributing:
  Correct the incorrect or not natural English expressions Thank you for @jonasbn !
  Add some issue_template files
  Update CONTRIBUTING.md
  WIP: Add 'Way of operation' section
  Add 'Useful Tools'
  Cleanup: Remove trailing white spaces

Author: naokazuterada

.github/CONTRIBUTING.md

@@ -4,12 +4,24 @@ These are the guidelines for contributing to this repository.
 
 ## Issues
 
-File an issue if you think you've found a bug. Please describe
+Please use the template for your type of issue.
 
-1. How can it be reproduced
-2. What was expected
-3. What actually occurred
-4. What version of the involved component
+- [Bug Report](https://github.com/naokazuterada/MarkdownTOC/issues/new)
+- [Feature Request](https://github.com/naokazuterada/MarkdownTOC/issues/new?template=feature.md)
+- [Question](https://github.com/naokazuterada/MarkdownTOC/issues/new?template=question.md)
+
+### Way of operation
+
+1. The maintainers will `Close` the issue or PR
+    1. Not accepted feature request
+        - Add the `wontfix` label
+    2. Not clear or unresponsive
+        - Not clear: Problem is not obvious or not reproducible.
+        - Unresponsive: the author does not respond to inquiries within 3 weeks.
+
+## Gitter
+
+If you want more general support or to ask questions, please use [Gitter](https://gitter.im/naokazuterada/MarkdownTOC) chat system.
 
 ## Patches
 
@@ -33,6 +45,10 @@ You should use unit-tests for SublimeText by using [UnitTesting](https://github.
 
 All contributions are welcome
 
+## Useful Tools
+
+- [Gyazo](https://gyazo.com/en): Tool for making animated GIFs from screen captures. Use it for showing how the function works.
+
 ## Licensing and copyright
 
 Please note that accepted contributions are included in the repository and hence under the same license as the repository contributed to.

.github/ISSUE_TEMPLATE.md

@@ -1,8 +1,25 @@
 <!--
-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
--->
+Template: BUG REPORT
+
+This is an template for a bug report.
+You should label `bug-report`.
+
+
+If your issue is not a bug report, please visit one of the following links.
+
+FEATURE REQUEST:
+https://github.com/naokazuterada/MarkdownTOC/issues/new?template=feature.md
+
+QUESTION:
+https://github.com/naokazuterada/MarkdownTOC/issues/new?template=question.md
+
+-->
+
+# How can the issue be reproduced
+
+# What was expected
+
+# What actually occurred
+
+# What was the version of the involved component

.github/ISSUE_TEMPLATE/feature.md

@@ -0,0 +1,23 @@
+<!--
+
+Template: FEATURE REQUEST
+
+This is an template for a feature request.
+You should label `feature-request`.
+
+
+If your issue is not a feature request, please visit one of the following links.
+
+BUG REPORT:
+https://github.com/naokazuterada/MarkdownTOC/issues/new?template=bug.md
+
+QUESTION:
+https://github.com/naokazuterada/MarkdownTOC/issues/new?template=question.md
+
+-->
+
+# Purpose
+
+# How important it is
+
+# Ideal implementation

.github/ISSUE_TEMPLATE/question.md

@@ -0,0 +1,19 @@
+<!--
+
+Template: QUESTION
+
+This is a template for a general question
+You should label `question`.
+
+
+If your issue is not a question, please visit one of the following links.
+
+BUG REPORT:
+https://github.com/naokazuterada/MarkdownTOC/issues/new?template=bug.md
+
+FEATURE REQUEST:
+https://github.com/naokazuterada/MarkdownTOC/issues/new?template=feature.md
+
+-->
+
+# Question