Added a simple README file

README.md

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+# Holy Haskell
+
+This very simple script will initialize your new Haskell project.
+It will initialize the `.gitignore` file, the cabal file and give an
+example of test suite.
+
+# Usage
+
+Clone the repository locally and launch the script:
+
+```
+./holy-haskell.sh
+```
+
+It will ask some questions, do your best dear aventurer!
+
+## dependencies
+
+- [Haskell](http://haskell.org/platform)
+- [`cabal`](http://haskell.org/cabal) version at least 1.18 ; to install it:
+
+    ```
+    cabal update
+    cabal install cabal-install
+    ```
+- [`git`](http://git-scm.org)
+- [`zsh`](http://zsh.org) which should be already installed on most platform