Added 'gotchas' section to document the workaround for #10

Working around this rather than fixing it because of future plans to overhaul client libs. If those don't work, should circle back and fix this by modifying client builder freemarker to stringify and lowercase all boolean args.

README.md

@@ -29,3 +29,7 @@ client = FusionAuthClient('6b87a398-39f2-4692-927b-13188a81a9a3', 'http://localh
 Each method in the client library includes documentation to describe the use and parameters. In addition to this resource, review the API documentation. https://fusionauth.io/docs/v1/tech/apis/
 
 If you encounter issues with this library, please open an issue.
+
+### Gotchas
+
+If you need to pass a boolean to any methods, such as `logout`, pass a lowercase string value: `"true"` for `True`, `"false"` for `False`. See https://github.com/FusionAuth/fusionauth-python-client/issues/10 for more info on this issue.