Update verify URL to show 1.1.

documentation/v2.md

@@ -5,7 +5,7 @@ Authenticated calls to Tweet Marker use OAuth Echo to verify a user's account, j
 
 X-Verify-Credentials-Authorization should be constructed in the usual way with secret keys, etc. More info about OAuth Echo is available here: http://dev.twitter.com/pages/oauth_echo
 
-X-Auth-Service-Provider should be: https://api.twitter.com/1/account/verify_credentials.json
+X-Auth-Service-Provider should be: https://api.twitter.com/1.1/account/verify_credentials.json
 
 Set last-read marker
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