OAuth 1.0a service refactor to remove many properties

src/main/java/org/scribe/builder/api/YahooApi.java

@@ -3,13 +3,13 @@ package org.scribe.builder.api;
 public class YahooApi extends DefaultApi10a
 {
   @Override
-  protected String getAccessTokenEndpoint()
+  public String getAccessTokenEndpoint()
   {
     return "https://api.login.yahoo.com/oauth/v2/get_token";
   }
 
   @Override
-  protected String getRequestTokenEndpoint()
+  public String getRequestTokenEndpoint()
   {
     return "https://api.login.yahoo.com/oauth/v2/get_request_token";
   }