update parameters to follow OAuth 2.0 draft 10 which facebook and oth…

…er major OAuth2 servers now support

lib/oauth2/access_token.rb

@@ -10,7 +10,7 @@ def initialize(client, token, refresh_token = nil, expires_in = nil, params = {}
       @expires_in = (expires_in.nil? || expires_in == '') ? nil : expires_in.to_i
       @expires_at = Time.now + @expires_in if @expires_in
       @params = params
-      @token_param = 'access_token'
+      @token_param = 'oauth_token'
     end
 
     def [](key)

lib/oauth2/strategy/web_server.rb

@@ -4,7 +4,7 @@ module OAuth2
   module Strategy
     class WebServer < Base
       def authorize_params(options = {}) #:nodoc:
-        super(options).merge('type' => 'web_server')
+        super(options).merge('response_type' => 'code')
       end
 
       # Retrieve an access token given the specified validation code.
@@ -35,7 +35,7 @@ def access_token(*args)
 
       def access_token_params(code, options = {}) #:nodoc:
         super(options).merge({
-          'type' => 'web_server',
+          'grant_type' => 'authorization_code',
           'code' => code
         })
       end