Adjust core/README.md text
@@ -4,9 +4,11 @@ This Rust crate contains the essential V8 bindings for Deno's command-line
interface (Deno CLI). The main abstraction here is the Isolate which provides a
way to execute JavaScript. The Isolate is modeled as a
`Future<Item=(), Error=JSError>` which completes once all of its ops have
-completed. The user must define what an Op is by implementing the `Dispatch`
-trait, and by doing so define any "built-in" functionality that would be
-provided by the VM. Ops are triggered by `Deno.core.dispatch()`.
+completed.
+
+In order to bind Rust functions into JavaScript, use the `Deno.core.dispatch()`
+function to trigger the "dispatch" callback in Rust. The user is responsible for
+encoding both the request and response into a Uint8Array.
Documentation for this crate is thin at the moment. Please see
[http_bench.rs](https://github.com/denoland/deno/blob/master/core/examples/http_bench.rs)
