Use vendored modules

Signed-off-by: Izuru Yakumo <yakumo.izuru@chaotic.ninja>

git-svn-id: file:///srv/svn/repo/aya/trunk@67 cec141ff-132a-4243-88a5-ce187bd62f94

vendor/github.com/yosssi/gcss/comment.go

@@ -0,0 +1,20 @@
+package gcss
+
+import "io"
+
+// comment represents a comment of CSS.
+type comment struct {
+	elementBase
+}
+
+// WriteTo does nothing.
+func (c *comment) WriteTo(w io.Writer) (int64, error) {
+	return 0, nil
+}
+
+// newComment creates and returns a comment.
+func newComment(ln *line, parent element) *comment {
+	return &comment{
+		elementBase: newElementBase(ln, parent),
+	}
+}