vendor dependencies with dep

vendor/github.com/vanng822/css/README.md

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+# css
+
+Package css is for parsing css stylesheet.
+
+# Document
+
+[![GoDoc](https://godoc.org/github.com/vanng822/css?status.svg)](https://godoc.org/github.com/vanng822/css)
+
+# example
+
+	import (
+		"github.com/vanng822/css"
+		"fmt"
+	)
+	func main() {
+		csstext = "td {width: 100px; height: 100px;}"
+		ss := css.Parse(csstext)
+		rules := ss.GetCSSRuleList()
+		for _, rule := range rules {
+			fmt.Println(rule.Style.SelectorText)
+			fmt.Println(rule.Style.Styles)
+		}
+	}