don't write gitignore if one exists already

lib/zanzibar/actions/bundle.rb

@@ -47,12 +47,14 @@ module Zanzibar
         ## Make sure the directory exists and that a .gitignore is there to ignore it
         if @settings['secret_dir']
           FileUtils.mkdir_p(@settings['secret_dir'])
+          if !File.exist? "#{@settings['secret_dir']}/.gitignore"
             File.open("#{@settings['secret_dir']}/.gitignore", 'w') do |file|
               file.puts '*'
               file.puts '!.gitignore'
             end
           end
         end
+      end
 
       def resolved_file?
         File.exist? RESOLVED_NAME

lib/zanzibar/version.rb

@@ -1,4 +1,4 @@
 # The version of the gem
 module Zanzibar
-  VERSION = '0.1.19'
+  VERSION = '0.1.20'
 end