Merge pull request #139 from la-magra/is-crlf-hosts-file

Fix situation with hosts file line endings

Author: seth-reeser

lib/vagrant-hostmanager/hosts_file/updater.rb

@@ -75,7 +75,7 @@ def update_file(file, resolving_machine = nil, include_id = true)
           file = Pathname.new(file)
           old_file_content = file.read
           new_file_content = update_content(old_file_content, resolving_machine, include_id)
-          file.open('w') { |io| io.write(new_file_content) }
+          file.open('wb') { |io| io.write(new_file_content) }
           old_file_content != new_file_content
         end