Updates spectrum.zsh
Adds command line aliases useful for dealing with JSON
adding support for node
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge pull request #2390 from LFDM/updating_spectrum

Updates and refactors spectrum.zsh
Merge pull request #2563 from bobwilliams/master

Adds command line aliases useful for dealing with JSON
set exclude-dir or exclude grep flags only if available