Update babel docgen plugin to generate docs for React.createClass and createReactClass

[danielduan]

babel-plugin-react-docgen has been updated and published. New version should generate docs automatically for components created with React.createClass and createReactClass

Issue:

Solves #1096

What I did

Updated package.json version number to install new minor version.

How to test

run storybook and check the info addon

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@a6e1af3). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master    #1206   +/-   ##
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  Coverage          ?   13.72%           
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  Files             ?      207           
  Lines             ?     4611           
  Branches          ?      517           
=========================================
  Hits              ?      633           
  Misses            ?     3525           
  Partials          ?      453

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