title: Ruby hash kind of flatten
body: <p>Having this array of hashes, :</p>
  
  <pre><code>a = [{"red"=&gt;"130"}, {"blue"=&gt;"94"}, {"green"=&gt;"57"}]
  </code></pre>
  
  <p>I want to get a full flatten hash like this:</p>
  
  <pre><code>{"red"=&gt;"130", "blue"=&gt;"94", "green"=&gt;"57"}
  </code></pre>