Add a .gitattributes file to handle Unix files on Windows

We like to keep the LF line endings, instead of changing to CRLF
Change file after uploading from a Windows hosts to LF

We have to change the line endings from CRLF to LF, just removing all
CR characters.  If you don't do that, the IPv4 address will not set for
the network interfaces.
Update override-plugin.rb

With "temp.binmode" the file is written in LF only mode, even on a Windows host. That's all, no "tr" command is needed.
Fixed typo in .gitattributes
Merge pull request #87 from DieterReuter/windows-crlf

Mods for using on a Windows host, use LF instead of CRLF line ending
feat(Vagrantfile) Use box versions, remove monkey patch.

As of 308 we generate json files that include version metadata for the
Vagrant boxes. Also the monkey patching has been moved into the box so
it can be removed from here.

Note: The version constraint ensures new instances will download 308 or
later but this is not enforced on existing instances. Since the monkey
patching is required just to get previous versions of CoreOS to boot
users should not update to this revision if old instances are in use.
Merge pull request #95 from marineam/master

feat(Vagrantfile) Use box versions, remove monkey patch.
Add ability to port-forward TCP docker service to host machine

Vagrantfile will check if $expose_docker_tcp is set in config.rb, and
will forwad the docker port (tcp/4243) to the specified port on the host.

Service for docker to listen on port 4243 added to user-data.
Merge pull request #100 from mattbailey/master

Add ability to port-forward TCP docker service to host machine
Merge remote-tracking branch 'upstream/master' into develop

* upstream/master:
  Add ability to port-forward TCP docker service to host machine
  feat(Vagrantfile) Use box versions, remove monkey patch.
  Fixed typo in .gitattributes
  Update override-plugin.rb
  Change file after uploading from a Windows hosts to LF
  Add a .gitattributes file to handle Unix files on Windows

Conflicts:
	override-plugin.rb