Remove gRPC example, add some simpler examples

div/div.go

@@ -0,0 +1,17 @@
+// +build js,wasm
+
+package div
+
+import "github.com/dennwc/dom"
+
+// Writer implements an io.Writer that appends content
+// to the dom.Element. It should ideally be used on a <div> element.
+type Writer dom.Element
+
+// Write implements io.Writer.
+func (d Writer) Write(p []byte) (n int, err error) {
+	node := dom.GetDocument().CreateElement("div")
+	node.SetInnerHTML(string(p))
+	(*dom.Element)(&d).AppendChild(node)
+	return len(p), nil
+}