Skips files in vendor

When installing gems using bundler on a CI system the gems end up in the vendor/bundle folder pr default and these files are not supposed to be included in the package, so they should be skipped. Also locally if installing gems in vendor/ I get a "Too many open files" error as each AppFile is opened upon instantiation.

Some systems will not the path be changed: ruby/setup-ruby#136

Author: kjeldahl

lib/zendesk_apps_support/package.rb

@@ -90,7 +90,7 @@ def files
       Dir[root.join('**/**')].each do |f|
         next unless File.file?(f)
         relative_file_name = f.sub(%r{#{root}/?}, '')
-        next if relative_file_name =~ %r{^tmp/}
+        next if relative_file_name =~ %r{^(tmp|vendor)/}
         files << AppFile.new(self, relative_file_name)
       end
       files