How to install and start with Haskell

Since it wasn't quite obvious from the [Haskell Documentation](https://www.haskell.org/) I decided to write it down how to install and start with programming in Haskell: Install via [Haskell Platform](https://www.haskell.org/platform/), there is a description how-to install this platform for every system. On my Linux system, it installed about 750 MB of stuff. But then I could simply start up the REPL using: ```bash $ ghci GHCi, version 8.0.2: http://www.haskell.org/ghc/ :? for help Prelude> putStrLn "Hello, World!" "Hello, World!" ``` or putting this into a `hello.hs` file: ```haskell main :: IO () main = putStrLn "Hello, World!" ``` Then I could compile and run it via ```sh $ ghc hello.js $ ./hello ``` Hope it helps to start the Haskell journey.