Merge pull request #63 from danielsbird/remove-duplicate-codepen-scripts

Load CodePen script once

Author: bvaughn

content/docs/thinking-in-react.md

@@ -62,7 +62,7 @@ Now that we've identified the components in our mock, let's arrange them into a
 ## Step 2: Build A Static Version in React
 
 <p data-height="600" data-theme-id="0" data-slug-hash="BwWzwm" data-default-tab="js" data-user="lacker" data-embed-version="2" class="codepen">See the Pen <a href="https://codepen.io/gaearon/pen/BwWzwm">Thinking In React: Step 2</a> on <a href="http://codepen.io">CodePen</a>.</p>
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 Now that you have your component hierarchy, it's time to implement your app. The easiest way is to build a version that takes your data model and renders the UI but has no interactivity. It's best to decouple these processes because building a static version requires a lot of typing and no thinking, and adding interactivity requires a lot of thinking and not a lot of typing. We'll see why.
 
@@ -107,7 +107,6 @@ So finally, our state is:
 ## Step 4: Identify Where Your State Should Live
 
 <p data-height="600" data-theme-id="0" data-slug-hash="qPrNQZ" data-default-tab="js" data-user="lacker" data-embed-version="2" class="codepen">See the Pen <a href="https://codepen.io/gaearon/pen/qPrNQZ">Thinking In React: Step 4</a> on <a href="http://codepen.io">CodePen</a>.</p>
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 OK, so we've identified what the minimal set of app state is. Next, we need to identify which component mutates, or *owns*, this state.
 
@@ -133,7 +132,6 @@ You can start seeing how your application will behave: set `filterText` to `"bal
 ## Step 5: Add Inverse Data Flow
 
 <p data-height="600" data-theme-id="0" data-slug-hash="LzWZvb" data-default-tab="js,result" data-user="rohan10" data-embed-version="2" data-pen-title="Thinking In React: Step 5" class="codepen">See the Pen <a href="https://codepen.io/gaearon/pen/LzWZvb">Thinking In React: Step 5</a> on <a href="http://codepen.io">CodePen</a>.</p>
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 So far, we've built an app that renders correctly as a function of props and state flowing down the hierarchy. Now it's time to support data flowing the other way: the form components deep in the hierarchy need to update the state in `FilterableProductTable`.