Simple persistent HashMap/Key-value store.
Usage: ```rust extern crate kv_cab;
use kv_cab::{ KV, Value };
fn main() {
let mut test_store = KV::
let _ = test_store.insert("key".to_string(), Value::String("value".to_string()));
println!("{:?}", test_store.get("key".to_string()));
let _ = test_store.remove("key".to_string());
} ```