diff --git a/LICENSE b/LICENSE
new file mode 100644
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,30 @@
+Copyright (c) 2014, Fujimura Daisuke
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+
+    * Neither the name of Fujimura Daisuke nor the names of other
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/Setup.hs b/Setup.hs
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--- /dev/null
+++ b/Setup.hs
@@ -0,0 +1,2 @@
+import Distribution.Simple
+main = defaultMain
diff --git a/git-freq.cabal b/git-freq.cabal
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--- /dev/null
+++ b/git-freq.cabal
@@ -0,0 +1,42 @@
+Name:                   git-freq
+Version:                0.0.1
+Author:                 Fujimura Daisuke<me@fujimuradaisuke.com>
+Maintainer:             Fujimura Daisuke<me@fujimuradaisuke.com>
+License:                BSD3
+License-File:           LICENSE
+Synopsis:               A Git subcommand to show total addition, deletion per file
+Description:            A Git subcommand to show total addition, deletion per file
+Cabal-Version:          >= 1.10
+Homepage:               https://github.com/fujimura/git-freq
+Build-Type:             Simple
+
+Executable git-freq
+  Main-Is:              Main.hs
+  Default-Language:     Haskell2010
+  GHC-Options:          -Wall
+  Hs-Source-Dirs:       src
+  Build-Depends:        base >= 4 && < 5
+                      , bytestring
+                      , containers
+                      , optparse-applicative
+                      , process
+                      , text
+
+test-suite spec
+  Main-Is:              Spec.hs
+  Default-Language:     Haskell2010
+  GHC-Options:          -Wall
+  Hs-Source-Dirs:       src
+                      , test
+  Type:                 exitcode-stdio-1.0
+  Build-Depends:        base
+                      , bytestring
+                      , containers
+                      , hspec
+                      , optparse-applicative
+                      , process
+                      , text
+
+Source-Repository head
+  Type:                 git
+  Location:             git@github.com:fujimura/git-freq.git
diff --git a/src/Main.hs b/src/Main.hs
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--- /dev/null
+++ b/src/Main.hs
@@ -0,0 +1,32 @@
+module Main where
+
+import           Git.Freq
+import qualified Git.Freq.Version    as Version
+import           Options.Applicative
+
+
+data Config = Config
+  { version :: Bool
+  , paths :: [FilePath]
+  }
+
+config :: Parser Config
+config = Config
+  <$> switch
+      (long "version" <> short 'v' <> help "Show version")
+  <*> many
+      (argument str (metavar "PATH..." <> help "Target paths"))
+
+main :: IO ()
+main = do
+    (Config showVersion paths) <- execParser opts
+    if showVersion then putStrLn Version.version
+                   else freq paths
+  where
+    opts = info (helper <*> config)
+      ( fullDesc
+      <> progDesc (unlines [ "Total addition, deletion per file will be shown as a csv in following format:"
+                            , "`file name, addition, deletion`"
+                            ])
+
+     <> header "git-freq - Show frequently changed code in the repository")
diff --git a/test/Spec.hs b/test/Spec.hs
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--- /dev/null
+++ b/test/Spec.hs
@@ -0,0 +1,1 @@
+{-# OPTIONS_GHC -F -pgmF hspec-discover #-}