// DELETE api/Employees/5
 public void Delete(Employee emp)
 {
     var client = new MongoClient(Settings.Default.MongoConnection);
     var db = client.GetDatabase(Settings.Default.DBName);
     var collection = db.GetCollection<Employee>("Employees");
     collection.DeleteOneAsync(p=>p.name.Equals(emp.name));
 }
 // POST api/Employees
 public async void Post(Employee emp)
 {
     var client = new MongoClient(Settings.Default.MongoConnection);
     var db = client.GetDatabase(Settings.Default.DBName);
     var collection = db.GetCollection<Employee>("Employees");
     collection.InsertOneAsync(emp);
 }