Suppressing error message when CLTools not installed

On Mavericks you can install full Xcode and Boxen, but then you get this line every time you run `boxen` on the command-line:

    No receipt for 'com.apple.pkg.CLTools_Executables' found at '/'.

This minor bugfix suppresses the message.
update Ruby and Puppet Deps
Merge pull request #613 from boxen/update-deps-06-03-2014

Update Ruby and Puppet Deps
Merge pull request #607 from walling/master

Suppressing error message when CLTools not installed
Revert "Merge pull request #607 from walling/master"

This reverts commit 1aea2e02c1a8d641bc7f7c6e58d7faaf13cb1696, reversing
changes made to db3d1de5f8ab587fcbad6813edfb7ce52d21ad96.
update puppet-ruby
Merge pull request #615 from boxen/update-ruby

Update puppet-ruby
Fix for git credentials containing an '=' sign

Thanks @dbussink
Merge pull request #628 from boxen/args-may-contain-equals

Fix for git credentials containing an '=' sign
updated to latest dependencies
update ruby stuff
Merge pull request #633 from boxen/update-deps

Update Puppet and Ruby dependencies
Upgrade gcc package to 2.1.1

Fixes #637
update librarian-puppet
update Puppet dependencies
Merge pull request #639 from boxen/update-librarian-puppet-and-puppet-git

Update librarian puppet and puppet git
Rename `module-data` to `module_data`

This came up in rodjek/librarian-puppet#242. A `-` is not a valid
character in module names according to
http://docs.puppetlabs.com/puppet/latest/reference/modules_fundamentals.html#allowed-module-names
In the Modulefile for ripienaar/puppet-module-data, the name actually
contains an underscore.

Thanks @hanjianwei for noticing this and tracking down the naming rules
Merge pull request #640 from boxen/fix-module-data-name

Rename `module-data` to `module_data`
Merge branch 'master' of https://github.com/boxen/our-boxen
Added NodeJS v11 as version to be installed.