Update templates

Author: tangbc

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,6 +1,6 @@
 ---
 name: Bug report
-about: Create a bug report to help improve
+about: Create a bug report to help improve.
 title: ''
 labels: bug
 assignees: ''
@@ -17,9 +17,8 @@ Steps to reproduce the behavior:
 3. See error
 
 **Screenshots or jsfiddle**
-If applicable, add screenshots or  jsfiddle to help explain your problem.
+If applicable, add screenshots or jsfiddle to help explain your problem.
 
 **Other (please complete the following information):**
- - OS: [e.g. iOS]
- - Browser [e.g. chrome, safari]
  - Version [e.g. 2.0]
+ - Browser [e.g. chrome, safari]

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,13 +1,13 @@
 ---
 name: Feature request
-about: Suggest an idea for this component
+about: Suggest an idea for this component.
 title: ''
 labels: suggestion
 assignees: ''
 
 ---
 
-**Is your feature request related to a problem? **
+**Is your feature request related to a problem?**
 A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
 
 **Describe the feature request**

.github/ISSUE_TEMPLATE/question-or-discuss.md

@@ -1,6 +1,6 @@
 ---
 name: Question or discuss
-about: Make your questions or topics you want to discuss.
+about: Ask your questions or topics you want to discuss.
 title: ''
 labels: question
 assignees: ''

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,9 @@
+**What kind of this PR?** (check at least one)
+
+- [ ] Bugfix
+- [ ] Feature
+- [ ] Code style update
+- [ ] Build-related changes
+- [ ] Other, please describe:
+
+**Other information:**