Update bug_report.md

.github/ISSUE_TEMPLATE/bug_report.md

@@ -5,9 +5,11 @@ about: Create a report to help us improve
 ---
 
 **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 '....'
@@ -15,24 +17,36 @@ Steps to reproduce the behavior:
 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.
 
-**Hardware (please complete the following information):**
+**Hardware (please complete the following information)**
+
  - Device [e.g. Intel Laptop, Raspberry Pi 3B+, Odroid C2]
  - Camera [e.g. Canon EOS 500D]
  - GPIO: [Yes/No]
 
-**Software (please complete the following information):**
+**Software (please complete the following information)**
+
  - OS [e.g. Raspbian Stretch]
  - Python version [e.g. 3.5.1]
  
-**Photobooth log:**
+ **Installed packages**
+ 
+ ```
+ Run 'pip freeze' in your virtual environment and paste the output here
+ ```
+
+**Photobooth log**
+
 ```
 Insert the content of photobooth.log here
 ```
 
 **Additional context**
+
 Add any other context about the problem here.