title: WP_Query through all terms of a taxonomy
body: <p>I'm trying to loop through all posts within a specific taxonomy, regardless of what term they're in (ie, through all terms in that taxonomy).</p>
  
  <p>I have this code:</p>
  
  <pre><code>&lt;?php 
      $terms = get_terms('business-books');
      $booksArgs = array(
      'posts_per_page' =&gt; '1',
      'tax_query' =&gt; array(array(
              'taxonomy' =&gt; 'business-books',
              'field' =&gt; 'slug',
              'terms' =&gt; $terms
      ))
      ); $books = new WP_Query($booksArgs); while ($books-&gt;have_posts()) : $books-&gt;the_post(); $thumbnail = wp_get_attachment_image_src( get_post_thumbnail_id($post-&gt;ID), full ); ?&gt;
      &lt;a href="&lt;?php the_permalink(); ?&gt;"&gt;&lt;img src="&lt;? echo get_bloginfo('template_directory'); ?&gt;/timthumb.php?src=&lt;? echo $thumbnail[0] ?&gt;&amp;amp;w=110&amp;amp;h=155&amp;amp;zc=1" alt="&lt;? get_the_title() ?&gt;" /&gt;&lt;/a&gt;
      &lt;h6&gt;&lt;a href="&lt;?php the_permalink(); ?&gt;"&gt;&lt;?php the_title(); ?&gt;&lt;/a&gt;&lt;/h6&gt;              
  &lt;?php endwhile; ?&gt;
  </code></pre>
  
  <p>I need <code>$terms</code> to return an array of all the terms in 'business-books'.</p>
  
  <p>Can someone aid me with this array?</p>
  
  <p>Thank you!</p>