Adapt demos to simplified authorization

Change-Id: If29075378f77cc8872cbf59c3e3d92fe39b84fb6
diff --git a/demo/adjectiveCollocates.R b/demo/adjectiveCollocates.R
index 4ef8fa9..3d69eaa 100644
--- a/demo/adjectiveCollocates.R
+++ b/demo/adjectiveCollocates.R
@@ -1,32 +1,13 @@
 library(RKorAPClient)
-library(httr2)
 library(kableExtra)
 
-demo_kor_app_id = "773NHGM76N7P9b6rLfmpM4"
-
-oauthorizeDemo <- function(kco, app_id = demo_kor_app_id) {
-  if (is.null(kco@accessToken) || is.null(kco@welcome)) { # if access token is not set or invalid
-    kco@accessToken <- ( # request one
-      oauth_client(
-        id =  app_id, # for the demo application
-        token_url = paste0(kco@apiUrl, "oauth2/token")
-      ) %>%
-        oauth_flow_auth_code(
-          scope = "search match_info",
-          auth_url = paste0(kco@KorAPUrl, "settings/oauth/authorize")
-        )
-    )$access_token
-  }
-  print(kco@accessToken)
-  return(kco)
-}
 
 new("KorAPConnection", verbose = TRUE) %>%
-  oauthorizeDemo() %>%
+  auth() %>%
   collocationAnalysis("focus([marmot/p=ADJA] {Gendern})", leftContextSize=1, rightContextSize=0) %>%
   mutate(collocate = paste0('<a href="', webUIRequestUrl, '">', collocate, '</a>')) %>%
   select(collocate, O, pmi, mi2, mi3, logDice, ll) %>%
-  kable(escape = FALSE, caption = "Adjective collocates of 'Gendern'") %>%
+  kable(format = "html", escape = FALSE, caption = "Adjective collocates of 'Gendern'") %>%
   kable_styling() %>%
   print()