MCO-647 let the user know where we search for applications
MCO-647 let the user know where we search for applications

Here we check if mco was called with an application name.  If it was, and we
don't have it, we now more clearly state that we don't have it and where we
would have looked in order to find the applications.

This results in output like:

    $ mco notping
    The Marionette Collective version 2.8.1

    Unknown command 'notping', searched for applications in:

        /Users/richardc/src/mcollective/lib
        /Users/richardc/.gem/ruby/1.9.3/gems/stomp-1.3.4/lib
        /opt/rubies/ruby-1.9.3-p547/lib/ruby/site_ruby/1.9.1
        /opt/rubies/ruby-1.9.3-p547/lib/ruby/site_ruby/1.9.1/x86_64-darwin13.4.0
        /opt/rubies/ruby-1.9.3-p547/lib/ruby/site_ruby
        /opt/rubies/ruby-1.9.3-p547/lib/ruby/vendor_ruby/1.9.1
        /opt/rubies/ruby-1.9.3-p547/lib/ruby/vendor_ruby/1.9.1/x86_64-darwin13.4.0
        /opt/rubies/ruby-1.9.3-p547/lib/ruby/vendor_ruby
        /opt/rubies/ruby-1.9.3-p547/lib/ruby/1.9.1
        /opt/rubies/ruby-1.9.3-p547/lib/ruby/1.9.1/x86_64-darwin13.4.0
        /Users/richardc/src/mcollective/lib/mcollective/vendor/systemu/lib

    Known commands:

        completion           facts                find
        help                 inventory            ping
        plugin               rpc

    Type './bin/mco help' for a detailed list of commands and './bin/mco help command'
    to get detailed help for a command

Iristyle/marionette-collective,shrug/marionette-collective,shrug/marionette-collective,heathseals/marionette-collective,spandeyindia/marionette-collective-1,pimpajr/marionette-collective,pimpajr/marionette-collective,Iristyle/marionette-collective,heathseals/marionette-collective,johnduarte/marionette-collective,puppetlabs/marionette-collective,Iristyle/marionette-collective,puppetlabs/marionette-collective,jessereynolds/marionette-collective,heathseals/marionette-collective,johnduarte/marionette-collective,spandeyindia/marionette-collective-1,shrug/marionette-collective,MikaelSmith/marionette-collective,johnduarte/marionette-collective,johnduarte/marionette-collective,puppetlabs/marionette-collective,jessereynolds/marionette-collective,puppetlabs/marionette-collective,spandeyindia/marionette-collective-1,heathseals/marionette-collective,pimpajr/marionette-collective,Iristyle/marionette-collective,johnduarte/marionette-collective,jessereynolds/marionette-collective,shrug/marionette-collective,MikaelSmith/marionette-collective,spandeyindia/marionette-collective-1,heathseals/marionette-collective,johnduarte/marionette-collective,MikaelSmith/marionette-collective,jessereynolds/marionette-collective,shrug/marionette-collective,pimpajr/marionette-collective,puppetlabs/marionette-collective,shrug/marionette-collective,heathseals/marionette-collective,jessereynolds/marionette-collective,Iristyle/marionette-collective,spandeyindia/marionette-collective-1,MikaelSmith/marionette-collective,MikaelSmith/marionette-collective,jessereynolds/marionette-collective,Iristyle/marionette-collective,pimpajr/marionette-collective,MikaelSmith/marionette-collective,puppetlabs/marionette-collective,spandeyindia/marionette-collective-1,pimpajr/marionette-collective