Update 4.0.0 to 4.0-beta1 at Documentation/Installing
Update 4.0.0 to 4.0-beta1 at Documentation/Installing

Patch by Ekaterina Dimitrova, reviewed by brandonwilliams for CASSANDRA-16000

blerer/cassandra,beobal/cassandra,thelastpickle/cassandra,thelastpickle/cassandra,tjake/cassandra,mike-tr-adamson/cassandra,mshuler/cassandra,belliottsmith/cassandra,jrwest/cassandra,krummas/cassandra,adelapena/cassandra,mike-tr-adamson/cassandra,szhou1234/cassandra,belliottsmith/cassandra,driftx/cassandra,belliottsmith/cassandra,pauloricardomg/cassandra,szhou1234/cassandra,mike-tr-adamson/cassandra,szhou1234/cassandra,blambov/cassandra,jrwest/cassandra,adelapena/cassandra,belliottsmith/cassandra,beobal/cassandra,bdeggleston/cassandra,thelastpickle/cassandra,adejanovski/cassandra,pauloricardomg/cassandra,driftx/cassandra,apache/cassandra,driftx/cassandra,mshuler/cassandra,blerer/cassandra,tjake/cassandra,pauloricardomg/cassandra,blambov/cassandra,bdeggleston/cassandra,adelapena/cassandra,jrwest/cassandra,instaclustr/cassandra,apache/cassandra,michaelsembwever/cassandra,blambov/cassandra,adejanovski/cassandra,krummas/cassandra,beobal/cassandra,bdeggleston/cassandra,apache/cassandra,instaclustr/cassandra,instaclustr/cassandra,instaclustr/cassandra,pauloricardomg/cassandra,krummas/cassandra,mike-tr-adamson/cassandra,michaelsembwever/cassandra,krummas/cassandra,driftx/cassandra,szhou1234/cassandra,tjake/cassandra,bdeggleston/cassandra,adelapena/cassandra,blambov/cassandra,beobal/cassandra,michaelsembwever/cassandra,blerer/cassandra,michaelsembwever/cassandra,thelastpickle/cassandra,mshuler/cassandra,blerer/cassandra,jrwest/cassandra,mshuler/cassandra,tjake/cassandra,apache/cassandra,adejanovski/cassandra