Readme: Add instructions to install dependencies

Change-Id: I57a6b602a37a187acc1907d7b840fda0a1697114
diff --git a/Readme.md b/Readme.md
index 093ed5d..f6fd47b 100644
--- a/Readme.md
+++ b/Readme.md
@@ -28,6 +28,13 @@
 
 ## Run and test without Docker
 
+### Requirements
+
+```bash
+R -e "install.packages(c('devtools', 'RKorAPClient', 'httr', 'shiny', 'shinythemes', 'highcharter'))
+R -e 'devtools::install_git("https://korap.ids-mannheim.de/gerrit/IDS-Mannheim/idsThemeR")'
+```
+
 Run `shiny/app.R` in RStudio or from the command line:
 
 ```bash