  We have performed polarized Raman scattering measurements on the newly
discovered superconductor Nd(O,F)BiS$_2$ ($T_c = 4$ K). We observe 2 Raman
active modes, with frequencies in accordance with first-principles
calculations. One A$_{1g}$ phonon mode at 112.4 cm$^{-1}$ exhibits a Fano line
shape due to electron-phonon coupling. We find a resonance for this mode at
2.45 eV excitation energy. We estimate a 0.68 contribution of this mode to the
electron-phonon coupling constant $\lambda$. Our Raman results suggest that the
BiS$_2$-based superconductors are possibly phonon-mediated BCS superconductors.
