remove eventloop type docs, improve service docs

3.0/docs/async/package.md

@@ -4,7 +4,6 @@ Async is a library revolving around two main concepts:
 
 - [Promises and Futures](futures.md)
 - [Streams](streams.md)
-- [Workers](worker.md)
 
 Together they form the foundation of Vapor 3's data flow.
 

3.0/docs/async/worker.md

@@ -1,11 +0,0 @@
-# Worker
-
-Workers are any type that keep track of the current [EventLoop](../concepts/async.md).
-
-Worker is a simple protocol and can be conformed to if the context can return (by means of a computed property) or contain an EventLoop.
-
-There are three primary Workers that you can use to access the `EventLoop` and it's queue or context.
-
-- [Request](../http/request.md) can be used, usually from within a [Route](../routing/basics.md)
-- [EventLoop](../concepts/async.md) is itself a worker to ensure the extensions and consumers of Worker can be used, too.
-- `DispatchQueue` is a worker that will return a *new and clean* EventLoop based on the current DispatchQueue

3.0/docs/concepts/services.md

@@ -74,3 +74,11 @@ If we set Vapor's environment to development we'll get an instance of `VerboseLo
 let logger = container.make(Logger.self)
 logger.log("hello", level: .verbose) // only logs on development
 ```
+
+## Containers
+
+Containers are types that contain the current context. They have access to the services, environment, configuration and [EventLoop](async.md) and can use these to `.make()` new service types.
+
+The factory method registered to a service will get access to the container's Context during the creation of type.
+
+There are a few containers that are often accessed, the primary `Container` type for Vapor users is [`Request`](../http/request.md), which can be accessed in every [`Route`](../routing/route.md).

3.0/mkdocs.yml

@@ -29,7 +29,6 @@ pages:
     - 'Package': 'async/package.md'
     - 'Futures': 'async/futures.md'
     - 'Streams': 'async/streams.md'
-    - 'Worker': 'async/worker.md'
 - 'HTTP':
     - 'Package': 'http/package.md'
     - 'Body': 'http/body.md'