chore: prepare for v0.2.0-alpha.1 release (#1410)

tokio-executor/README.md

@@ -2,40 +2,6 @@
 
 Task execution related traits and utilities.
 
-[Documentation](https://docs.rs/tokio-executor/0.1.7/tokio_executor)
-
-## Overview
-
-In the Tokio execution model, futures are lazy. When a future is created, no
-work is performed. In order for the work defined by the future to happen, the
-future must be submitted to an executor. A future that is submitted to an
-executor is called a "task".
-
-The executor is responsible for ensuring that [`Future::poll`] is called
-whenever the task is [notified]. Notification happens when the internal state of
-a task transitions from "not ready" to ready. For example, a socket might have
-received data and a call to `read` will now be able to succeed.
-
-This crate provides traits and utilities that are necessary for building an
-executor, including:
-
-* The [`Executor`] trait describes the API for spawning a future onto an
-  executor.
-
-* [`enter`] marks that the current thread is entering an execution
-  context. This prevents a second executor from accidentally starting from
-  within the context of one that is already running.
-
-* [`DefaultExecutor`] spawns tasks onto the default executor for the current
-  context.
-
-* [`Park`] abstracts over blocking and unblocking the current thread.
-
-[`Executor`]: https://docs.rs/tokio-executor/0.1.7/tokio_executor/trait.Executor.html
-[`enter`]: https://docs.rs/tokio-executor/0.1.7/tokio_executor/fn.enter.html
-[`DefaultExecutor`]: https://docs.rs/tokio-executor/0.1.7/tokio_executor/struct.DefaultExecutor.html
-[`Park`]: https://docs.rs/tokio-executor/0.1.7/tokio_executor/park/trait.Park.html
-
 ## License
 
 This project is licensed under the [MIT license](LICENSE).