title: Dictionary {cell1:cell2} from pandas DataFrame
body: <p>Let's assume that we wave following DF:</p>
  <pre><code>+-----------+-------------+
  | Indicator |    Value    |
  +-----------+-------------+
  | gnipc     |      540.00 |
  | survinf   |  1157321.00 |
  | Pop       | 38928341.00 |
  | u5mort    |       62.28 |
  +-----------+-------------+
  </code></pre>
  <p>and I would like to create a dictionary:</p>
  <pre><code>{'gnipc':540.00,
   'survinf':1157321.00,
   'Pop':38928341.00,
   'u5mort':62.28}
  </code></pre>
  <p>When I'm doing</p>
  <pre><code>dict = df.to_dict('records')
  </code></pre>
  <p>I'm getting list of dictionaries:</p>
  <pre><code>[{'Indicator': 'gnipc', 'Value': 540.0},
   {'Indicator': 'survinf', 'Value': 1157321.0},
   {'Indicator': 'Pop', 'Value': 38928341.0},
   {'Indicator': 'u5mort', 'Value': 62.28}]
  </code></pre>
  <p>and I have to make additional steps to get desired dictionary.
  How can I get this:</p>
  <pre><code>{'gnipc':540.00,
   'survinf':1157321.00,
   'Pop':38928341.00,
   'u5mort':62.28}
  </code></pre>
  <p>in most efficient way?</p>