title: flapjack plugin installation with logstash
body: <p>I have output plugin for flapjack in path vendor\local_gems. Even if when i am trying to list all the gems, i am not able to see the local flapjack gem. After installation of plugin, the below entries are there in Gemfile.</p>
  
  <p><code>gem "logstash-output-flapjack", "0.1.5", :path =&gt; "vendor/local_gems/0472ffe3/logstash-output-flapjack-0.1.5"</code></p>
  
  <p>But the folder <code>vendor/local_gems/0472ffe3/logstash-output-flapjack-0.1.5</code> is empty. I am not getting any gem file inside the above package. I have used the below commands to install the output plugin.</p>
  
  <p><code>gem build logstash-output-flapjack.gemspec
  bin/plugin install logstash-output-flapjack-0.1.5.gem</code></p>
  
  <p>So when I am trying to start the logstash by using below command
  <code>bin/logstash -f logstash-filter.conf</code></p>
  
  <p>I am getting the message that its not able to find the output block of flapjack. It means logstash is not able to locate the plugin for flapjack.</p>