message: Small changes in the documentation
diff: @@ -52,16 +52,13 @@ The boiler plate code you would write is
  ```rust
  #![no_std]
  -extern crate tock;
  -
  -fn main() {
  +async fn main() {
  // Your code
  }
  ```
  If you want to use heap based allocation you will have to add
  ```rust
  #![feature(alloc)]
  -extern crate alloc;
  ```
  to the preamble.
  