update doc examples

packages/router/src/routable.rs

@@ -93,7 +93,12 @@ impl<I: std::iter::FromIterator<String>> FromRouteSegments for I {
     }
 }
 
-/// Something that can be routed to
+/// Something that can be:
+/// 1) Converted from a route
+/// 2) Converted to a route
+/// 3) Rendered as a component
+///
+/// This trait can be derived using the `#[derive(Routable)]` macro
 pub trait Routable: std::fmt::Display + std::str::FromStr + Clone + 'static {
     /// The error that can occur when parsing a route
     const SITE_MAP: &'static [SiteMapSegment];