update docs

.github/ISSUE_TEMPLATE/unexpected-problems---bugs.md

@@ -14,7 +14,7 @@ feel free to delete everything in this template.
 
 (1) **If you're using examples, what's the command you run:**
 
-(2) **If you're using examples, have you made any changes to the examples? Paste `git diff` here:**
+(2) **If you're using examples, have you made any changes to the examples? Paste `git status; git diff` here:**
 
 (3) **If not using examples, tell us what you did:**
 

README.md

@@ -70,6 +70,9 @@ pip install --upgrade git+https://github.com/tensorpack/tensorpack.git
 # or add `--user` to install to user's local directories
 ```
 
+Please note that tensorpack is not yet stable.
+If you use tensorpack in your code, remember to mark the exact version of tensorpack you use as your dependencies.
+
 ## Citing Tensorpack:
 
 If you use Tensorpack in your research or wish to refer to the examples, please cite with: