diff --git a/README.md b/README.md
new file mode 100644
--- /dev/null
+++ b/README.md
@@ -0,0 +1,62 @@
+# Carettah := Make your presentation more fun! [![Build Status](https://api.travis-ci.org/master-q/carettah.svg)](https://travis-ci.org/master-q/carettah)
+
+## How to use
+
+~~~
+$ mkdir new_dir
+$ cd new_dir
+$ carettah -n new_slide.md &
+$ vi new_slide.md
+~~~
+
+if you would like to use
+[wii remote](http://en.wikipedia.org/wiki/Wii_Remote)...
+
+~~~
+$ carettah -w new_slide.md
+Put Wiimote in discoverable mode now (press 1+2)...
+~~~
+
+## How to install
+
+Install below:
+
+* [stack](https://www.stackage.org/)
+* [cwiid](http://abstrakraft.org/cwiid)
+* [Google Noto Fonts](http://www.google.com/get/noto/#/family/noto-sans-jpan) (need `Noto Sans CJK JP` and `Noto Sans Mono CJK JP`)
+
+```
+$ sudo apt-get install libcwiid-dev fonts-noto-cjk haskell-stack
+```
+
+And stack install.
+
+~~~
+$ git clone https://github.com/master-q/carettah.git
+$ cd carettah
+$ stack setup
+$ stack install gtk2hs-buildtools
+$ stack install
+~~~
+
+## For more detail
+
+* [sample.md](./sample/sample.md)
+* [Hackage](http://hackage.haskell.org/package/carettah)
+* [Source code](https://github.com/master-q/carettah)
+* [Demo movies](http://vimeo.com/channels/carettah)
+* [Sample slides](http://www.slideshare.net/tag/carettah)
+* [twitter](http://twitter.com/carettah)
+* [Facebook page](http://www.facebook.com/pages/carettah/185683134833159)
+* I'm a clone of [Rabbit](http://rabbit-shockers.org/).
+
+## Memo
+
+* `cairoFontMapGetDefault >>= pangoFontMapListFamilies :: IO [FontFamily]` can get list of font names.
+* `pangoFontFamilyIsMonospace :: FontFamily -> Bool` can find mono fonts.
+
+## Acknowledgment
+
+The carettah icon is created by [VisualPharm (Ivan Boyko)](http://www.visualpharm.com/).
+The icon is found at [Icon Search Engine](http://findicons.com/icon/69/turtle).
+Thank's a lot!
diff --git a/carettah.cabal b/carettah.cabal
--- a/carettah.cabal
+++ b/carettah.cabal
@@ -1,5 +1,5 @@
 Name:                   carettah
-Version:                0.5.0
+Version:                0.5.1
 Author:                 Kiwamu Okabe <kiwamu@debian.or.jp>
 Maintainer:             Kiwamu Okabe <kiwamu@debian.or.jp>
 License:                GPL-3
@@ -11,6 +11,7 @@
 Cabal-Version:          >= 1.6
 Build-Type:             Simple
 Homepage:               https://github.com/master-q/carettah
+Extra-source-files:     README.md
 Tested-with:            GHC == 8.0.1
 
 data-files:             data/turtle.png, data/debian.png, data/notfound.png