Print "cached" instead of timing info for cached requests

Change-Id: I64e87ffee251aae9bc09516b47054f856f58f66e
diff --git a/R/KorAPConnection.R b/R/KorAPConnection.R
index f941bdd..90f72c1 100644
--- a/R/KorAPConnection.R
+++ b/R/KorAPConnection.R
@@ -149,6 +149,7 @@
   if (kco@cache) {
     parsed <- R.cache::loadCache(dir=KorAPCacheSubDir(), key=list(url, kco@accessToken))
     if (!is.null(parsed)) {
+      parsed$meta$cached <- "local"
       return(parsed)
     }
   }