Added basic FAQs

docs/faq.rst

@@ -1,10 +1,11 @@
 Frequently Asked Questions
 ==========================
 
-.. warning::
+Do I have to use the provided search spaces? 
+ Ideally you would re-use the exisiting ones to facilitate comparison. However, you are free to define your own search space and clearly state this when reporting your results.
 
- This page is under construction.
+Can I use different environments than the ones provided?
+ Yes, we also wrap gymnasium environment which enables many different frameworks. It is not always clear, however, that these will actually work correctly when jitted, so you should proceed with caution.
 
-
-Your first question here
- Your answer here
+Where can I find the code for the experiments in the ARLBench paper?
+ The code for the experiments in the ARLBench paper can be found on the `experiments` branch of the ARLBench repo.