Added vendor lock on depsHEADmaster

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diff --git a/vendor/github.com/gorilla/css/scanner/doc.go b/vendor/github.com/gorilla/css/scanner/doc.go
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+// Copyright 2012 The Gorilla Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+/*
+Package gorilla/css/scanner generates tokens for a CSS3 input.
+
+It follows the CSS3 specification located at:
+
+	http://www.w3.org/TR/css3-syntax/
+
+To use it, create a new scanner for a given CSS string and call Next() until
+the token returned has type TokenEOF or TokenError:
+
+	s := scanner.New(myCSS)
+	for {
+		token := s.Next()
+		if token.Type == scanner.TokenEOF || token.Type == scanner.TokenError {
+			break
+		}
+		// Do something with the token...
+	}
+
+Following the CSS3 specification, an error can only occur when the scanner
+finds an unclosed quote or unclosed comment. In these cases the text becomes
+"untokenizable". Everything else is tokenizable and it is up to a parser
+to make sense of the token stream (or ignore nonsensical token sequences).
+
+Note: the scanner doesn't perform lexical analysis or, in other words, it
+doesn't care about the token context. It is intended to be used by a
+lexer or parser.
+*/
+package scanner