Update README.md: removed some version usages

README.md

@@ -22,7 +22,6 @@ Initialisation works as followed, for configuration an `APIEndpoint`-Instance ha
 
 >>> endpoint = netdb_client.APIEndpoint(
     base_url='www-net-devel.scc.kit.edu',
-    version='3.0',
     token='<token>'
 )
 >>> api = netdb_client.APISession(endpoint)
@@ -61,9 +60,6 @@ optional arguments:
                         webapi server.
                         Environment: "NETDB_BASE_URL"
                         Config: [$endpoint]: base_url
-  --version VERSION     webapi version.
-                        Environment: "NETDB_VERSION"
-                        Config: [$endpoint]: version
   --token TOKEN, -t TOKEN
                         user API token.
                         Environment: "NETDB_TOKEN"