Update Vagrant download url to 1.4.3 - #19

Signed-off-by: Rogerio Prado de Jesus <rogeriopradoj@gmail.com>
Bump version to 1.4.3 in vagrant.nuspec - #19

Fix #19: Update Vagrant to 1.4.3

Signed-off-by: Rogerio Prado de Jesus <rogeriopradoj@gmail.com>
Merge pull request #20 from rogeriopradoj/fix-19

Fix #19: Update Vagrant to 1.4.3
Updated to CwRsync 5.2.2

Thanks to narnaud for the updated code.
Fix cwrsync package.

rsync needs to have ssh.exe in the Path.
To avoid adding chocolatey internal path, create a script that set the
path and call rsync."
Update golang to 1.2.1
Merge pull request #21 from narnaud/master

Fix cwrsync package.
Added narnaud as a contributor to README