📝 Revise bug report template

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,35 +1,69 @@
 ---
 name: Bug report
 about: Create a report to help us improve
-title: "[BUG]"
+title: "\U0001F41B [BUG]"
 labels: "\U0001F41B bug"
 assignees: ''
 
 ---
 
-**Describe the bug**
-A clear and concise description of what the bug is.
 
-**To Reproduce**
+## Your Environment
+
+- `mas version`:
+- macOS version (`system_profiler SPSoftwareDataType -detailLevel mini`): 10.1...
+
+### mas Install Method
+
+- [] `brew install mas` (homebrew-core)
+- [] [mas-cli/tap](https://github.com/mas-cli/homebrew-tap)
+- [] `.pkg` installer from [releases](https://github.com/mas-cli/mas/releases)
+- [] Built from source
+   - Fork/branch: ? (e.g. mas-cli/master)
+   - Xcode version: 10.?
+
+## 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
+1. Click on '....'
+1. Scroll down to '....'
+1. See error
 
-**Expected behavior**
-A clear and concise description of what you expected to happen.
+## Expected Behavior
 
-**Actual behavior**
-A clear and concise description of what actually happened.
+> 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):**
- - mas version [e.g. 1.4.3]
- - macOS version: [e.g. 10.14.1]
- - How did you install mas? [e.g. brew, [mas-cli/tap](https://github.com/mas-cli/homebrew-tap), pkg installer, built from source]
 
-**Additional context**
-Add any other context about the problem here.
+## Actual Behavior
+
+> A clear and concise description of what actually happened.
+
+
+
+## Screenshots, Terminal Output
+
+> If applicable, add screenshots to help explain your problem.
+
+
+
+```
+$ mas command
+...
+```
+
+
+## Additional Context
+
+> Add any other context about the problem here.
+> Did it work in a previous version?
+
+