Update dependencies (#32)

vendor/github.com/valyala/bytebufferpool/bytebuffer_example_test.go

@@ -0,0 +1,21 @@
+package bytebufferpool_test
+
+import (
+	"fmt"
+
+	"github.com/valyala/bytebufferpool"
+)
+
+func ExampleByteBuffer() {
+	bb := bytebufferpool.Get()
+
+	bb.WriteString("first line\n")
+	bb.Write([]byte("second line\n"))
+	bb.B = append(bb.B, "third line\n"...)
+
+	fmt.Printf("bytebuffer contents=%q", bb.B)
+
+	// It is safe to release byte buffer now, since it is
+	// no longer used.
+	bytebufferpool.Put(bb)
+}