updated Linux installation notes.
updated Linux installation notes.

nulang/nu,gcbeyond/nu,jqk6/nu,timburks/nu,heiko-henrich/nutor,nulang/nu,heiko-henrich/nutor,timburks/nu,jqk6/nu,hodgeswt/nu,alloy/nu,gcbeyond/nu,spotify/nu,gcbeyond/nu,hodgeswt/nu,spotify/nu,timburks/nu,jqk6/nu,heiko-henrich/nutor,alloy/nu,spotify/nu,jqk6/nu,nulang/nu,heiko-henrich/nutor,hodgeswt/nu,spotify/nu,gcbeyond/nu,hodgeswt/nu