title: input-group pushes next inputs to the next row
body: <p>I have a <code>row</code> divided into two parts(<code>col-md-5 and col-md-7</code>). First part contains a question and the second part has 6 input fields(5 text inputs and 1 selectbox).</p>
  
  <p>So, i divided the second part into 6 fields(<code>col-sm-2</code>). Everything works fine. Now i want to add <code>input-group-addon</code> to two of the text field. But when, i'm trying to add <code>input-group</code> to the parent div of that input box, the size of input box increases and it pushes all the input boxes(next to it) to the next row.</p>
  
  <p>Here's the code</p>
  
  <pre><code>&lt;div class="row"&gt;
      &lt;div class="col-md-5"&gt;
          &lt;p class="text-info"&gt;How many PRI"s? How much are you paying per month?&lt;/p&gt;
      &lt;/div&gt;
      &lt;div class="col-md-7"&gt;
          &lt;div class="form-group"&gt;
              &lt;div class=" col-sm-2"&gt;
                  &lt;input type="text" value="" name="pri_qty" class="form-control input-sm" placeholder="QTY"&gt;
              &lt;/div&gt;
              &lt;!-- i want to add input-group to the next input field --&gt;
              &lt;div class=" col-sm-2"&gt;
                  &lt;input type="text" value="" name="pri_mrate" class="form-control input-sm" placeholder="$/M"&gt;
              &lt;/div&gt;
              &lt;div class=" col-sm-2"&gt;
                  &lt;select name="pri_competitor_id" class="form-control input-sm"&gt;&lt;option selected="selected" value=""&gt;Provider&lt;/option&gt;&lt;option value="1"&gt;ALLSTREAM&lt;/option&gt;&lt;option value="2"&gt;BELL&lt;/option&gt;&lt;option value="3"&gt;BV&lt;/option&gt;&lt;option value="4"&gt;CONVERGIA&lt;/option&gt;&lt;option value="5"&gt;DISTRIBUTEL&lt;/option&gt;&lt;option value="6"&gt;ONE CONNECT&lt;/option&gt;&lt;option value="7"&gt;TELSYNERGIE&lt;/option&gt;&lt;option value="8"&gt;TELUS&lt;/option&gt;&lt;option value="9"&gt;VIDEOTRON&lt;/option&gt;&lt;option value="10"&gt;SELECTCOM&lt;/option&gt;&lt;option value="11"&gt;OTHER&lt;/option&gt;&lt;/select&gt;
              &lt;/div&gt;
              &lt;div class=" col-sm-2"&gt;
                  &lt;input type="text" value="" name="pri_avaya" class="form-control input-sm" placeholder="Avaya"&gt;
              &lt;/div&gt;
              &lt;div class=" col-sm-2"&gt;
                  &lt;input type="text" value="" name="pri_our_rate" class="form-control input-sm" placeholder="$/M"&gt;
              &lt;/div&gt;
              &lt;div class=" col-sm-2"&gt;
                  &lt;input type="text" value="" name="pri_install" class="form-control input-sm" placeholder="Setup"&gt;
              &lt;/div&gt;
          &lt;/div&gt;
      &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>`</p>