diff --git a/README.md b/README.md
index ea11e89..924aff2 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ Options:
 
 Library
 -------
-Documentation available at hackage
+[Documentation available at hackage](https://hackage.haskell.org/package/picedit-0.1.0.0/docs/Data-Picture.html)
 
 ```haskell
 import Picture
diff --git a/app/Main.hs b/app/Main.hs
index 744af14..4b72768 100644
--- a/app/Main.hs
+++ b/app/Main.hs
@@ -1,5 +1,5 @@
 module Main where
-  import Picture
+  import Data.Picture
   import System.Environment
 
   data Options = Options { file :: FilePath
@@ -27,7 +27,6 @@ module Main where
   main :: IO ()
   main = do
     args <- getArgs
-    print args
 
     if null args
       then do
diff --git a/picedit.cabal b/picedit.cabal
index 382a09b..5e545d2 100644
--- a/picedit.cabal
+++ b/picedit.cabal
@@ -2,12 +2,12 @@ name:                picedit
 version:             0.1.0.0
 synopsis:            simple image manipulation functions
 description:         Simple set of functions for image manipulation: contrast, brightnesss, rotation, etc.
-homepage:            https://github.com/mdibaiee/image-editor-hs#readme
+homepage:            https://github.com/mdibaiee/picedit#readme
 license:             GPL-3
 license-file:        LICENSE
-author:              Author name here
-maintainer:          example@example.com
-copyright:           2016 Author name here
+author:              Mahdi Dibaiee
+maintainer:          mdibaiee@aol.com
+copyright:           2016 Mahdi Dibaiee
 category:            Image, Picture, Matrix
 build-type:          Simple
 -- extra-source-files:
@@ -15,14 +15,14 @@ cabal-version:       >=1.10
 
 library
   hs-source-dirs:      src
-  exposed-modules:     Picture
+  exposed-modules:     Data.Picture
   build-depends:       base >= 4.7 && < 5,
                        JuicyPixels >= 3.2.8 && < 3.3,
                        hmatrix >= 0.17.0.2 && < 0.18,
                        vector >= 0.11.0.0 && < 0.12
   default-language:    Haskell2010
 
-executable image-editor-hs-exe
+executable picedit
   hs-source-dirs:      app
   main-is:             Main.hs
   ghc-options:         -threaded -rtsopts -with-rtsopts=-N
diff --git a/src/Picture.hs b/src/Data/Picture.hs
similarity index 88%
rename from src/Picture.hs
rename to src/Data/Picture.hs
index eb4513d..629b4a5 100644
--- a/src/Picture.hs
+++ b/src/Data/Picture.hs
@@ -2,18 +2,27 @@
 {-# LANGUAGE FlexibleContexts #-}
 {-# LANGUAGE TypeFamilies #-}
 
-module Picture ( grayscale
-               , readPicture
-               , fromImage
-               , toImage
-               , writePicturePng
-               , fade
-               , rotate
-               , contrast
-               , brightness
-               , gamma
-               , invert
-               )
+{-|
+Module      : Picture
+Description : manipulation functions
+Copyright   : (c) Mahdi Dibaiee, 2016
+License     : GPL-3
+Maintainer  : mdibaiee@aol.com
+Stability   : experimental
+Portability : POSIX
+-}
+module Data.Picture ( grayscale
+                    , readPicture
+                    , fromImage
+                    , toImage
+                    , writePicturePng
+                    , fade
+                    , rotate
+                    , contrast
+                    , brightness
+                    , gamma
+                    , invert
+                    )
   where
 
     import Codec.Picture
@@ -21,10 +30,7 @@ module Picture ( grayscale
     import qualified Data.Vector.Storable as V
     import System.IO
     import Data.Maybe
-    import Debug.Trace
 
-    -- RGBA
-    
     -- | 'Picture' type is just a triple of color channel matrices: (R, G, B)
     type Picture = (Matrix Double, Matrix Double, Matrix Double)