Use Literate Haskell (lhs) to write the Main program

[vu3rdd]

Use lhs to write the FuncTorrent Main program that uses the library, so that we can explain what is going on and the sequence of steps. I don't know yet if this is useful for this project. I can see that it is useful for a program that uses a library which has many entry points. FuncTorrent library may or may not have so many entry points (i.e. exposed functions to be used by the client program). Using Literate Haskell could be a nice way to write down how our library works and how to use it.. I got inspired while looking at this.