Update README.md

Fix `your` to `you're`

Author: amaidah

README.md

@@ -146,7 +146,7 @@ import { Handle, Track, Tick } from './your-local-slider-components'
 
 This library takes a [compound component](https://www.youtube.com/watch?v=hEGg-3pIHlE) approach to creating sliders that separates the data/logic from presentation.
 
-If your familiar with Kent Dodd's work on Paypal's [downshift](https://github.com/paypal/downshift) or [react-toggled](https://github.com/kentcdodds/react-toggled) then the pattern should seem familiar.
+If you're familiar with Kent Dodd's work on Paypal's [downshift](https://github.com/paypal/downshift) or [react-toggled](https://github.com/kentcdodds/react-toggled) then the pattern should seem familiar.
 The components use the [function as child components pattern](https://medium.com/merrickchristensen/function-as-child-components-5f3920a9ace9).
 
 In practical terms this means you can create just about any kind of slider you can imagine and use whatever style approach you want.