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Vagrant 1.5 added Vagrant Cloud to share boxes. Some boxes
may be protected, the `login` command allows to access those
protected boxes from Vagrant Cloud.

Vagrant 1.5 introduced Vagrant Share to allow remote access to a Vagrant
environment. This adds support for the `share` and `connect` commands.

Vagrant 1.6 introduces a couple new commands, including the `version` command.
The `version` command shows the currently installed version information and
also checks for new updates available.

Autocompletion fails if there's only one mark, since the ls command
will not display the parent directory with the trailing colon.
Handling the single mark case separately and validating the symlink
explicitly, resolves the issue.

Change marks function and remove 'function' keyword as suggested by pielgrzym in https://github.com/robbyrussell/oh-my-zsh/pull/2045#issuecomment-22820224

Add _completemarks function as suggested by pielgrzym in https://github.com/robbyrussell/oh-my-zsh/pull/2045#issuecomment-22826540

The typical command is `subl`, not `st`. Leaving both for backward compatibility.

See http://www.sublimetext.com/docs/2/osx_command_line.html

Added taps to bundled_commands

* -r, --record now looks for a local file instead of trying to cache
  the entire package index
* add --editable because it's useful
* add --single-version-externally-managed because it is too long
* add --record and --root because they're required by
  --single-version-externally-managed