Update bug scrub docs (ansible#15894)

* Update docs with a few more things

* update about use of PAT
* update around managing output from the script

* Fix spacing and empty line

* finish run on sentence
* update requirements with extra dep needed

Author: thedoubl3j

tools/community-bugscrub/README.md

@@ -16,4 +16,11 @@ Get the usage.
 
 ```
 python generate-sheet.py -h
-```
+```
+
+## Adding a github Personal Access Token
+The scripts looks first for a github personal access token to use to avoid having the scripts calls rate limited, you can create one or use an existing one if you have. The script looks for the PAT under the environment var `GITHUB_ACCESS_TOKEN`. 
+
+
+# For internal spreadsheet usage
+AWX engineers will need to import the data generated from the script into a spreadshet manager. Please make sure that you do not replace the existing sheets but make a new one or create a new sheet inside the existing spreadsheet upon import. 

tools/community-bugscrub/requirements.txt

@@ -1,2 +1,3 @@
 requests
 pyexcel
+pyexcel-ods3