Update issue templates

.github/ISSUE_TEMPLATE/bug_report.md

+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**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.
+
+**PHP (please complete the following information):**
+ - OS: [e.g. Centos]
+ - Browser [e.g. chrome, safari]
+ - Version [e.g. 7.0.0]
+ - PHP ini
+
+**SkyWalking (please complete the following information):**
+ - OS: [e.g. Centos]
+ - Browser [e.g. stock browser, safari]
+ - Version [e.g. 6.4]
+
+**Additional context**
+Add any other context about the problem here.