Fix Missing_OAuth_Token error via realdoug/omniauth-salesforce#12

Author: mintotsai

lib/omniauth/strategies/salesforce.rb

@@ -67,7 +67,7 @@ def auth_hash
       def raw_info
         access_token.options[:mode] = :query
         access_token.options[:param_name] = :oauth_token
-        @raw_info ||= access_token.post(access_token['id']).parsed
+        @raw_info ||= access_token.get(access_token['id']).parsed
       end
 
       extra do