move sinatra-decompile to custom extensions

sinatra-contrib/README.md

@@ -28,8 +28,6 @@ Currently included:
 * `sinatra/content_for`: Adds Rails-style `content_for` helpers to Haml, Erb,
   Erubis and Slim.
 
-* `sinatra/decompile`: Recreates path patterns from Sinatra's internal data
-  structures (used by other extensions)/
 
 * `sinatra/link_header`: Helpers for generating `link` HTML tags and
   corresponding `Link` HTTP headers. Adds `link`, `stylesheet` and `prefetch`
@@ -49,7 +47,12 @@ To be included soon:
 ## Custom Extensions
 
 These extensions may add additional dependencies and enhance the behavior of the
-existing APIS.
+existing APIs.
+
+Currently included:
+
+* `sinatra/decompile`: Recreates path patterns from Sinatra's internal data
+  structures (used by other extensions)/
 
 To be included soon:
 

sinatra-contrib/lib/sinatra/contrib.rb

@@ -8,7 +8,6 @@ module Sinatra
     # Sinatra::Application by default.
     module Common
       register :ConfigFile
-      register :Decompile
       register :Namespace
       register :RespondWith
       helpers :ContentFor
@@ -19,6 +18,7 @@ module Sinatra
     # Other extensions you don't want to be loaded unless needed.
     module Custom
       # register :Compass
+      register :Decompile
     end
 
     ##