Update more examples, add css for more examples

examples/readme.rs

@@ -1,3 +1,10 @@
+//! The example from the readme!
+//!
+//! This example demonstrates how to create a simple counter app with dioxus. The `Signal` type wraps inner values,
+//! making them `Copy`, allowing them to be freely used in closures and and async functions. `Signal` also provides
+//! helper methods like AddAssign, SubAssign, toggle, etc, to make it easy to update the value without running
+//! into lock issues.
+
 use dioxus::prelude::*;
 
 fn main() {