added documentation

src/Servant.hs

@@ -1,8 +1,14 @@
-module Servant
-  ( module Servant.API
-  , module Servant.Client
-  , module Servant.Server
-  , module Servant.Text
+module Servant (
+  -- | This module and its submodules can be used to define servant APIs. Note
+  -- that these API definitions don't directly implement a server (or anything
+  -- else).
+  module Servant.API,
+  -- | For implementing servers for servant APIs.
+  module Servant.Server,
+  -- | For accessing servant APIs as API clients.
+  module Servant.Client,
+  -- | Helper module
+  module Servant.Text,
   ) where
 
 import Servant.API

src/Servant/API.hs

@@ -1,11 +1,24 @@
-module Servant.API
-  ( module Servant.API.Capture
-  , module Servant.API.Get
-  , module Servant.API.GetParam
-  , module Servant.API.Post
-  , module Servant.API.RQBody
-  , module Servant.API.Sub
-  , module Servant.API.Union
+module Servant.API (
+
+  -- * Combinators
+  -- | Type-level combinator for expressing routing, captures, get parameters, etc.
+  module Servant.API.Sub,
+  -- | Type-level combinator for alternative endpoints
+  module Servant.API.Union,
+
+  -- * Accessing information from the request
+  -- | Capturing parts of the url path as parsed values
+  module Servant.API.Capture,
+  -- | Retrieving parameters from the query part of the 'URI'
+  module Servant.API.GetParam,
+  -- | Accessing the request's body
+  module Servant.API.RQBody,
+
+  -- * Actual endpoints, distinguished by HTTP method
+  -- | GET requests
+  module Servant.API.Get,
+  -- | POST requests
+  module Servant.API.Post,
   ) where
 
 import Servant.API.Capture
@@ -14,4 +27,4 @@ import Servant.API.GetParam
 import Servant.API.Post
 import Servant.API.RQBody
 import Servant.API.Sub
-import Servant.API.Union
+import Servant.API.Union

src/Servant/Server.hs

@@ -1,5 +1,10 @@
 {-# LANGUAGE TypeFamilies #-}
 {-# LANGUAGE OverloadedStrings #-}
+
+-- | This module lets you implement 'Server's for defined APIs.  You will
+-- probably need 'serve' (and look at the 'HasServer' type family), but
+-- 'toApplication' and 'route' are rather internals.
+
 module Servant.Server where
 
 import Data.Proxy