added many more examples

examples/button.nim

@@ -0,0 +1,16 @@
+
+include karax / prelude
+
+var lines: seq[kstring] = @[]
+
+proc createDom(): VNode =
+  result = buildHtml(tdiv):
+    button:
+      text "Say hello!"
+      proc onclick(ev: Event; n: VNode) =
+        lines.add "Hello simulated universe"
+    for x in lines:
+      tdiv:
+        text x
+
+setRenderer createDom