Security upgrades

node_modules/css-vendor/readme.md

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+[![Build Status](https://travis-ci.org/cssinjs/css-vendor.svg?branch=master)](https://travis-ci.org/cssinjs/css-vendor) [![Greenkeeper badge](https://badges.greenkeeper.io/cssinjs/css-vendor.svg)](https://greenkeeper.io/)
+
+## CSS vendor prefix detection and property feature testing.
+
+### Vendor prefixes
+
+```javascript
+console.log(cssVendor.prefix.js) // e.g. WebkitTransform
+
+console.log(cssVendor.prefix.css) // e.g. -webkit-transform
+```
+
+### Property support feature test
+
+`cssVendor.supportedProperty(prop)`
+
+Test if property is supported, returns false if not. Returns string if supported. May add a vendor prefix if needed.
+
+```javascript
+console.log(cssVendor.supportedProperty('animation')) // e.g. -webkit-animation
+```
+
+### Value support feature test
+
+`cssVendor.supportedValue(prop, value)`
+
+Test if value is supported, returns false if not. Returns string if supported. May add a vendor prefix if needed.
+
+```javascript
+console.log(cssVendor.supportedValue('display', 'flex')) // e.g. -webkit-flex
+```
+
+## Run tests
+
+```bash
+yarn
+yarn test
+```
+
+## License
+
+MIT