public boolean addUser(String username, String password) {
		boolean succes = false;
		try {
			crs = qb.selectFrom("users").where("username", "=", username).executeQuery();
			if(crs.next()) {
				succes = false;
			} else {
				String[] fields = {"username", "password"};
				String[] values = {username, password};
				qb.insertInto("users", fields).values(values).execute();
				succes = true;
			}
		} catch (SQLException e) {
			e.printStackTrace();
		} finally {
			try {
				crs.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
		return succes;
	}