Specialize Readme.md for tidyverse branch

Change-Id: Ie1cffc198fef5b18eeb0a578cb460389ed8dacc3
diff --git a/Readme.md b/Readme.md
index e2b5358..314be8d 100644
--- a/Readme.md
+++ b/Readme.md
@@ -1,5 +1,5 @@
 ---
-KorAP web service client package for R
+KorAP web service client package for R: tidyverse branch
 ---
 
 ## Description
@@ -15,9 +15,10 @@
 ```R
 # install.packages("devtools")
 library(devtools)
-install_git("https://korap.ids-mannheim.de/gerrit/KorAP/RKorAPClient") 
+install_git("https://korap.ids-mannheim.de/gerrit/KorAP/RKorAPClient", ref="tidy")
 library(RKorAPClient)
 ?corpusQuery
+?freqeuncyQuery
 ```
 
 ## Hello world