Fixing install command

[ghost]

Previous version of this command would throw errors when converging, see issue
#11

Adding these extra flags will converge successfully

-----> Starting Kitchen (v1.6.0)
-----> Converging <default-windows-2012r2>...
       Preparing files for transfer
       Preparing dna.json
       Resolving cookbook dependencies with Berkshelf 4.3.0...
       Removing non-cookbook files before transfer
       Preparing solo.rb
-----> Chef Omnibus installation detected ()

       Transferring files to <default-windows-2012r2>
       Starting Chef Client, version 12.8.1
       Installing Cookbook Gems:
       Compiling Cookbooks...
       Converging 14 resources
       Recipe: cygwin::default
         * directory[C:\Users\vagrant\AppData\Local\Temp\kitchen\cache] action create (up to date)
         * remote_file[C:\Users\vagrant\AppData\Local\Temp\kitchen\cache/setup.exe] action create
           - create new file C:\Users\vagrant\AppData\Local\Temp\kitchen\cache/setup.exe
           - update content in file C:\Users\vagrant\AppData\Local\Temp\kitchen\cache/setup.exe from none to 08079a
           (new content is binary, diff output suppressed)
         * execute[setup.exe] action run
           - execute setup.exe -q -O -R C:/cygwin --no-desktop --download --local-install -s http://cygwin.mirrors.pair.com
         * windows_path[C:\cygwin\bin] action add
           * env[path] action modify

           * ruby_block[fix ruby ENV['PATH']] action run
             - execute the ruby block fix ruby ENV['PATH']
           * ruby_block[fix ruby ENV['PATH']] action nothing (skipped due to action :nothing)