Improve Linux installation instructions
Improve Linux installation instructions

JamesWTruher/PowerShell-1,KarolKaczmarek/PowerShell,bingbing8/PowerShell,bingbing8/PowerShell,kmosher/PowerShell,PaulHigin/PowerShell,jsoref/PowerShell,bingbing8/PowerShell,KarolKaczmarek/PowerShell,daxian-dbw/PowerShell,TravisEz13/PowerShell,KarolKaczmarek/PowerShell,JamesWTruher/PowerShell-1,KarolKaczmarek/PowerShell,jsoref/PowerShell,PaulHigin/PowerShell,jsoref/PowerShell,daxian-dbw/PowerShell,TravisEz13/PowerShell,bingbing8/PowerShell,bmanikm/PowerShell,jsoref/PowerShell,daxian-dbw/PowerShell,TravisEz13/PowerShell,bmanikm/PowerShell,PaulHigin/PowerShell,JamesWTruher/PowerShell-1,kmosher/PowerShell,kmosher/PowerShell,KarolKaczmarek/PowerShell,JamesWTruher/PowerShell-1,jsoref/PowerShell,kmosher/PowerShell,bmanikm/PowerShell,daxian-dbw/PowerShell,PaulHigin/PowerShell,bmanikm/PowerShell,bingbing8/PowerShell,kmosher/PowerShell,bmanikm/PowerShell,TravisEz13/PowerShell