Remove the `after_build` option. This never made much sense.

README.md

@@ -122,12 +122,6 @@ Adjust these values accordingly.
     middleman build [--clean]
     middleman deploy [--clean]
 
-To automatically run middleman-deploy after `middleman build`, add:
-
-      deploy.after_build = true
-
-Default is `false`.
-
 ## NOTES
 
 When the `--clean` or `--no-clean` option is passed to `middleman

lib/middleman-deploy/extension.rb

@@ -5,7 +5,7 @@ require "middleman-core"
 module Middleman
   module Deploy
 
-    class Options < Struct.new(:whatisthis, :method, :host, :port, :user, :password, :path, :clean, :remote, :branch, :after_build, :force_build); end
+    class Options < Struct.new(:whatisthis, :method, :host, :port, :user, :password, :path, :clean, :remote, :branch, :force_build); end
 
     class << self
 
@@ -22,13 +22,8 @@ module Middleman
         options.remote ||= "origin"
         options.branch ||= "gh-pages"
 
-        options.after_build ||= false
         options.force_build ||= false
 
-        app.after_build do |builder|
-          ::Middleman::Cli::Deploy.new.deploy if options.after_build
-        end
-
         @@options = options
 
         app.send :include, Helpers