use std::fs::File;
use std::io::prelude::*;
use std::path::Path;
pub fn read_to_string<P: AsRef<Path>>(path: P) -> String {
let mut file = File::open(path).expect("Error: openning the file");
let mut contents = String::new();
file.read_to_string(&mut contents)
.expect("Error: reading the file");
contents
}