title: add line between two 2 lines in php file with sed/awk
body: <p>I get a php file which contain :</p>
  
  <pre><code>&lt;?php
    ),
    'datadirectory' =&gt; '/var/www/owncloud/data',
    'overwrite.cli.url' =&gt; 'http://M.Y.I.P',
    'dbtype' =&gt; 'mysql',
    'version' =&gt; '9.1.4.2',
    );
  </code></pre>
  
  <p>and I would like to insert a line between the line version and the end :</p>
  
  <pre><code>  'theme' =&gt; 'mytheme',
  </code></pre>
  
  <p>so it must look like this :</p>
  
  <pre><code>&lt;?php
    ),
    'datadirectory' =&gt; '/var/www/owncloud/data',
    'overwrite.cli.url' =&gt; 'http://M.Y.I.P',
    'dbtype' =&gt; 'mysql',
    'version' =&gt; '9.1.4.2',
    'theme' =&gt; 'mytheme',
    );
  </code></pre>
  
  <p>I'm currently trying with sed or awk but can't find the right syntax, can you help me ?</p>
  
  <p>Thanks a lot </p>