Add another download optionfor Reactome

Author: dvklopfenstein

doc/md/README_download_hints.md

@@ -18,7 +18,8 @@ See below for user hints ...
 
 ## Hints for downloading the Reactome Knowledgebase (details)
 ### 1. Download the Reactome database
-Download from **https://reactome.org/dev/graph-database**
+Download from **https://reactome.org/dev/graph-database** or
+`wget https://reactome.org/download/current/reactome.graphdb.tgz`
 ![download](images/download.png)
 
 ### 2. Uncompress and extract the Reactome database in Neo4j format