path/filepath: add example for Match

Change-Id: Id2df4895a95904a607e54dd9810bfe97f5e12a73
Reviewed-on: https://go-review.googlesource.com/c/144105
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

src/path/filepath/example_unix_test.go

@@ -79,3 +79,18 @@ func ExampleJoin() {
 	// a/b/c
 	// a/b/c
 }
+
+func ExampleMatch() {
+	fmt.Println("On Unix:")
+	fmt.Println(filepath.Match("/home/catch/*", "/home/catch/foo"))
+	fmt.Println(filepath.Match("/home/catch/*", "/home/catch/foo/bar"))
+	fmt.Println(filepath.Match("/home/?opher", "/home/gopher"))
+	fmt.Println(filepath.Match("/home/\\*", "/home/*"))
+
+	// Output:
+	// On Unix:
+	// true <nil>
+	// false <nil>
+	// true <nil>
+	// true <nil>
+}