update readme

Author: veziak

readme.md

@@ -11,4 +11,5 @@
 
 ## Notes:
 
-Group Access Tokens (https://docs.gitlab.com/ee/user/group/settings/group_access_tokens.html) are not supported at the moment, only Project Access Tokens
+- Group Access Tokens (https://docs.gitlab.com/ee/user/group/settings/group_access_tokens.html) are not supported at the moment, only Project Access Tokens (https://docs.gitlab.com/ee/user/project/settings/project_access_tokens.html)
+- One Lambda can handle webhooks only for one GitLab Project (repo) , because only one GitLab Access Token is stored in GITLAB_TOKEN