Fixed example Button

[xzessmedia]

According to this issue ( #137 ) , using stateless components apps bootstrapped with create-react-app ^3.0.0 will break this component.
This can be easily fixed by extending React.Component.
Added the correct sample to Readme.MD

[deepakaggarwal7]

Hey @xzessmedia xzessmedia! Thanks for helping with this fix. I'll merge it and publish it with tagging you in README very soon. Can you help me understand the exact problem it fixed? I mean is there any link to docs or something you can help to explain better on why exactly it is breaking now?

[xzessmedia]

hi @deepakaggarwal7 please see the referenced issue.
most people bootstrapp their react apps with create-react-app.
the provided samplebutton is a stateless component which will result in the issue #137 when people use create-react-app ^3.0.0 after extending from React.Component class as described in the official react docs, it works.
If you have further questions, just let me now

[deepakaggarwal7]

Thanks. I've merged and would release a patch. Would credit you in README log :)