added method to retrieve heartbeats, needs to be tested

src/main/java/manage/OAuth2ClientCredentials.java

@@ -13,14 +13,5 @@ public class OAuth2ClientCredentials {
 
         /** Domain name in the "Callback URL". */
         public static final String DOMAIN = "127.0.0.1";
-
-        public static void errorIfNotSpecified() {
-            if (API_KEY.startsWith("Enter ") || API_SECRET.startsWith("Enter ")) {
-                System.out.println(
-                        "Enter API Key and API Secret from http://www.dailymotion.com/profile/developer"
-                                + " into API_KEY and API_SECRET in " + OAuth2ClientCredentials.class);
-                System.exit(1);
-            }
-        }
     }