title: Moving key/value pair from one Hash to another
body: <p>I am a newbie programmer using Ruby, and this is my first question on Stack Overflow so please bear with me. Let's say I have two Hashes:</p>
  
  <pre><code>hash_one = { :key1 =&gt; :value1, :key2 =&gt; :value2, :key3 =&gt; :value3 } 
  hash_two = { :key4 =&gt; :value4, :key5 =&gt; :value5, :key6 =&gt; :value6 }
  </code></pre>
  
  <p>What would be the easiest way to move a key/value pair from <code>hash_one</code> (e.g. <code>:key1 =&gt; :value1</code>) into <code>hash_two</code>?</p>