Implement Parser Combinators according blog as https://fsharpforfunandprofit.com/posts/understanding-parser-combinators/
Not finished and will not update anymore, becasue I am borther .
Current state is to add json parser(chapter 4), any pull requests are welcome! Build using visual studio 2017.
Next big thing to implement is to support recursive variant , (the data type is support by mapbox), and can recursively parse recursive data structure (like lisp, json etc).