Adapt README again because reason given was probably wrong
Adapt README again because reason given was probably wrong

It seems the problem might already be fixed in master.
xuwei-k/xsbt,sbt/sbt,mdedetrich/sbt,sbt/sbt,mdedetrich/sbt,jrudolph/sbt-dependency-graph,sbt/sbt,xuwei-k/xsbt,mdedetrich/sbt,xuwei-k/xsbt,mdedetrich/sbt,sbt/sbt,sbt/sbt,mdedetrich/sbt,xuwei-k/xsbt,xuwei-k/xsbt,mdedetrich/sbt,sbt/sbt,sbt/sbt,mdedetrich/sbt