Require.js file is not supporting

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Require.js

Hi,
I found the following issue while running my program. Here I send you the firebug console errors and the files which I included in my html page header part.If any one come to know what the issue is kindly tell me the solution.

Firebug console
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Error: Module name "request" has not been loaded yet for context: _. Use require([]) http://requirejs.org/docs/errors.html#notloaded


...c=c[b]});return c}function C(b,c,d,e){c=Error(c+"\nhttp://requirejs.org/docs/err...

my code
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<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
               <script src="http://requirejs.org/docs/release/2.1.18/minified/require.js"></script>
  <script src="https://raw.githubusercontent.com/natevw/node-chargify/ad91cdec92f41d4045bb6e2189e5a04571576bcc/chargify.js" ></script>