add bin file load and save function. verify it by ./CellSearch --loadbin f1890_s1.92_g0_0.16s.bin --freq-start 1890e6 --recbin f1890_s1.92_g0_0.08s.bin; then ./CellSearch --loadbin f1890_s1.92_g0_0.08s.bin --freq-start 1890e6. The bin file is in test directory