### Description
Renders a progress bar similar to the ones used on Youtube.
### Examples
**Basic**
```
<ProgressBar
    progress={ 75 }
/>
```
**Demo**
```
// @NOTE (wyu): As recommended by styleguidist, if you need a more complex demo
// it’s often a good idea to define it in a separate JavaScript file and require
// it in Markdown

const ProgressBarExamples = require('examples').ProgressBarExamples;

<ProgressBarExamples />
```
