Improved the community docs.

- Added the PR template & code of conduct
- Improved the issue templates.

.github/ISSUE_TEMPLATE/bug_report.md

@@ -4,36 +4,44 @@ about: Create a report to help us improve
 labels: bug
 ---
 
-<!-- Please make sure you have read the README or Wiki, and your question does not appear in other existing issues (including closed ones). Thanks for your cooperation! Now let's start it. -->
+# Checklist
+<!-- Please complete the following list of tasks, and then check it by change the "[ ]" to "[x]" -->
+- [ ] I have read the [tutorials](https://chirpy.cotes.info/categories/tutorial/) and know the correct effect of the functional design.
+- [ ] There are no similar reports on existing issues (including closed ones).
+- [ ] I found the bug on the latest code of `master` branch.
 
-**Describe the bug**
+
+# Describe the bug
 <!-- A clear and concise description of what the bug is. -->
 
-**To Reproduce**
-<!--
+## To Reproduce
+
 Steps to reproduce the behavior:
+
 1. Go to '...'
 2. Click on '....'
 3. Scroll down to '....'
 4. See error
--->
 
-**Expected behavior**
+
+## Expected behavior
 <!-- A clear and concise description of what you expected to happen. -->
 
-**Screenshots**
+## Screenshots
 <!-- If applicable, add screenshots to help explain your problem. -->
 
-**Desktop (please complete the following information):**
+## Desktop:
+<!-- Please complete the following information -->
  - OS: [e.g. iOS]
  - Browser: [e.g. chrome, safari]
  - Version: [e.g. 22]
 
-**Smartphone (please complete the following information):**
+## Smartphone:
+<!-- please complete the following information -->
  - Device: [e.g. iPhone6]
  - OS: [e.g. iOS8.1]
  - Browser: [e.g. stock browser, safari]
  - Version: [e.g. 22]
 
-**Additional context**
+## Additional context
 <!-- Add any other context about the problem here. -->

.github/ISSUE_TEMPLATE/feature_request.md

@@ -4,18 +4,25 @@ about: Suggest an idea for this project
 labels: enhancement
 ---
 
-<!-- Please make sure your request does not appear in other existing issues (including closed ones). Thanks for your cooperation. Now, I can't wait to listen your idea! -->
+# Checklist
+<!-- Please complete the following list of tasks, and then check it by change the "[ ]" to "[x]" -->
+- [ ] I have read the [contributing guidelines](https://github.com/cotes2020/jekyll-theme-chirpy/blob/master/.github/CONTRIBUTING.md).
+- [ ] There are no similar request on existing issues (including closed ones).
+- [ ] I have read the [project progress](https://github.com/cotes2020/jekyll-theme-chirpy/projects) and know the current progress of the project.
+- [ ] I was in the `master` branch of the latest code.
 
 
-**Is your feature request related to a problem? Please describe.**
+# Is your feature request related to a problem? Please describe
 <!-- A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] -->
 
-**Describe the solution you'd like**
+
+# Describe the solution you'd like
 <!-- A clear and concise description of what you want to happen. -->
 
-**Describe alternatives you've considered**
+
+# Describe alternatives you've considered
 <!-- A clear and concise description of any alternative solutions or features you've considered. -->
 
 
-**Additional context**
+# Additional context
 <!-- Add any other context or screenshots about the feature request here. -->

.github/ISSUE_TEMPLATE/question.md

@@ -4,54 +4,21 @@ about: Ask what ever you want
 labels: question
 ---
 
-<!-- Please make sure you have read the README or Wiki, and your question does not appear in other existing issues (including closed ones). Thanks for your cooperation. Now, uncomment the relevant part to describe the situation. -->
+# Checklist
+<!-- Please complete the following list of tasks, and then check it by change the "[ ]" to "[x]" -->
+- [ ] I have read the [tutorials](https://chirpy.cotes.info/categories/tutorial/) and know the correct effect of the functional design.
+- [ ] There are no similar question on existing issues (including closed ones).
+- [ ] I searched the Internet for related problems, but still couldn't solve it.
+- [ ] My question is based on the latest code of `master` branch.
 
+
+# I don't understand what the ReadMe/Wiki says
 <!-- 
-**Don't understand what the README or Wiki says.**
 Point out the parts that are hard for you to understand. 
 -->
 
+
+# I have other questions
 <!-- 
-**Want to complain about my bad days.**
-Don't hesitate to share your story!
--->
-
-<!--
-**Just wanted to say hi to the author.**
-Hi, I'm ..., have a nice day ! 
--->
-
-
-<!-- 
-**Not sure if it's a bug**
-Please try to describe the problem
-
-**To Reproduce**
-
-Steps to reproduce the behavior:
-1. Go to '...'
-2. Click on '....'
-3. Scroll down to '....'
-4. See error
-
-
-**Expected behavior**
-A clear and concise description of what you expected to happen.
-
-**Screenshots**
-If applicable, add screenshots to help explain your problem.
-
-**Desktop (please complete the following information):**
- - OS: [e.g. iOS]
- - Browser: [e.g. chrome, safari]
- - Version: [e.g. 22]
-
-**Smartphone (please complete the following information):**
- - Device: [e.g. iPhone6]
- - OS: [e.g. iOS8.1]
- - Browser: [e.g. stock browser, safari]
- - Version: [e.g. 22]
-
-**Additional context**
-Add any other context about the problem here. 
--->
+Please describe your strange question.
+-->