docs: update readme

Author: joaomdsg

README.md

@@ -1,6 +1,54 @@
-# via-plugin-picocss
-Enables styles from PicoCSS globally in a Via application.
-
+#  ✨ PicoCSS Plugin
 The PicoCSS plugin integrates seamlessly with Via to provide elegant, responsive, and lightweight styling for your components without writing any CSS manually.
 
-See PicoCSS [Documentation](https://picocss.com/docs), to learn more about PicoCSS.
+## Example
+```go
+package main
+
+import (
+	"github.com/go-via/via"
+	"github.com/go-via/via-plugin-picocss/picocss"
+	"github.com/go-via/via/h"
+)
+
+type Counter struct{ Count int }
+
+func main() {
+	v := via.New()
+
+	v.Config(via.Options{
+		DocumentTitle: "Via Counter",
+		Plugins:       []via.Plugin{picocss.Default},
+	})
+
+	v.Page("/", func(c *via.Context) {
+		data := Counter{Count: 0}
+		step := c.Signal(1)
+
+		increment := c.Action(func() {
+			data.Count += step.Int()
+			c.Sync()
+		})
+
+		c.View(func() h.H {
+			return h.Main(h.Class("container"), h.Br(),
+				h.H1(h.Text("⚡ Via Counter w/ PicoCSS Plugin")),
+				h.Hr(),
+				h.Div(
+					h.H2(h.Strong(h.Text("Count - ")), h.Textf("%d", data.Count)),
+					h.H5(h.Strong(h.Text("Step - ")), h.Span(step.Text())),
+					h.Div(h.Role("group"),
+						h.Input(h.Type("number"), step.Bind()),
+						h.Button(h.Text("Increment"), increment.OnClick()),
+					),
+				),
+			)
+		})
+	})
+
+	v.Start()
+}
+```
+
+## Docs
+See PicoCSS [docs](https://picocss.com/docs) to learn how to use it.