Update README.md

Author: bfiessinger

README.md

@@ -255,7 +255,7 @@ data contains an object with values for `startPosition` and `endPosition`
 ## Browser Compatibility
 ![Chrome](https://camo.githubusercontent.com/26846e979600799e9f4273d38bd9e5cb7bb8d6d0/68747470733a2f2f7261772e6769746875622e636f6d2f616c7272612f62726f777365722d6c6f676f732f6d61737465722f7372632f6368726f6d652f6368726f6d655f34387834382e706e67) | ![Firefox](https://camo.githubusercontent.com/6087557f69ec6585eb7f8d7bd7d9ecb6b7f51ba1/68747470733a2f2f7261772e6769746875622e636f6d2f616c7272612f62726f777365722d6c6f676f732f6d61737465722f7372632f66697265666f782f66697265666f785f34387834382e706e67) | ![IE](https://camo.githubusercontent.com/4b062fb12353b0ef8420a72ddc3debf6b2ee5747/68747470733a2f2f7261772e6769746875622e636f6d2f616c7272612f62726f777365722d6c6f676f732f6d61737465722f7372632f617263686976652f696e7465726e65742d6578706c6f7265725f392d31312f696e7465726e65742d6578706c6f7265725f392d31315f34387834382e706e67) | ![Edge](https://camo.githubusercontent.com/826b3030243b09465bf14cf420704344f5eee991/68747470733a2f2f7261772e6769746875622e636f6d2f616c7272612f62726f777365722d6c6f676f732f6d61737465722f7372632f656467652f656467655f34387834382e706e67) | ![Opera](https://camo.githubusercontent.com/96d2405a936da1fb8988db0c1d304d3db04b8a52/68747470733a2f2f7261772e6769746875622e636f6d2f616c7272612f62726f777365722d6c6f676f732f6d61737465722f7372632f6f706572612f6f706572615f34387834382e706e67) | ![Safari](https://camo.githubusercontent.com/6fbaeb334b99e74ddd89190a42766ea3b4600d2c/68747470733a2f2f7261772e6769746875622e636f6d2f616c7272612f62726f777365722d6c6f676f732f6d61737465722f7372632f7361666172692f7361666172695f34387834382e706e67)
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-review follows ✔ | review follows ✔ | 10+ ✔ | review follows ✔ | review follows ✔ | review follows ✔ |
+15+ ✔ | 7+ ✔ | 10+ ✔ | 12+ ✔ | 15+ ✔ | 6+ ✔ |
 
 ### Polyfills
 Support for older browsers requires a polyfill for <code>requestAnimationFrame()</code>