Merge pull request #189 from jetjinser/update-readme-example

docs(readme): update example thanks to @jetjinser

README.md

@@ -22,25 +22,28 @@ There are multiple examples in the examples folder. Use `cargo run --example exa
 
 ```Rust
 // Setup the epd
-let mut epd = Epd4in2::new( & mut spi, cs, busy, dc, rst, & mut delay) ?;
+let mut epd4in2 =
+    Epd4in2::new(&mut spi, busy, dc, rst, &mut delay, None).expect("eink initalize error");
 
 // Setup the graphics
-let mut display = Display4in2::default ();
-
-// Draw some text
-display.draw(
-let _ = Text::new("Hello Rust!", Point::new(x, y))
-.into_styled(text_style!(
-            font = Font12x16,
-            text_color = Black,
-            background_color = White
-        ))
-.draw(display);
-);
-
-// Transfer the frame data to the epd and display it
-epd.update_and_display_frame( & mut spi, & display.buffer()) ?;
+let mut display = Display4in2::default();
+
+// Build the style
+let style = MonoTextStyleBuilder::new()
+    .font(&embedded_graphics::mono_font::ascii::FONT_6X10)
+    .text_color(Color::White)
+    .background_color(Color::Black)
+    .build();
+let text_style = TextStyleBuilder::new().baseline(Baseline::Top).build();
+
+// Draw some text at a certain point using the specified text style
+let _ = Text::with_text_style("It's working-WoB!", Point::new(175, 250), style, text_style)
+    .draw(&mut display);
+
+// Going to sleep
+epd4in2.sleep(&mut spi, &mut delay)
 ```
+> Check the complete example [here](./examples/epd4in2.rs).
 
 ## (Supported) Devices