add PathMatch configuration

src/DotNetCore.CAP/Dashboard/CAP.DashboardOptions.cs

@@ -10,6 +10,7 @@ namespace DotNetCore.CAP
         public DashboardOptions()
         {
             AppPath = "/";
+            PathMatch = "/cap";
             Authorization = new[] { new LocalRequestsOnlyAuthorizationFilter() };
             StatsPollingInterval = 2000;
         }
@@ -19,6 +20,8 @@ namespace DotNetCore.CAP
         /// </summary>
         public string AppPath { get; set; }
 
+        public string PathMatch { get; set; }
+
         public IEnumerable<IDashboardAuthorizationFilter> Authorization { get; set; }
 
         /// <summary>