vg/draw: add package level documentation

Fixes #678. Signed-off-by: Sebastien Binet <binet@cern.ch>
gonum · Mar 10, 2021 · caab778 · caab778
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commit caab778
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diff --git a/vg/draw/doc.go b/vg/draw/doc.go
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+// Copyright ©2021 The Gonum 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 draw provides types and functions to draw shapes on a vg.Canvas.
+package draw