sfdx command is outdated

[rossMac96]

the hardcoded "sfdx" command that's prepended in SfdxCommand.js seems to no longer work. Should be replaced with "sfdx-cli".

[gfarb]

@rossMac96 sorry for getting to this so late. sfdx should still be a valid command and we will eventually want to move to the new sf executable. Are you receiving a particular warning or error message?