BUG: Commented funcs causing errors and renamed gauss_fit. See details.

Commented out bin_edges_to_centers -- dtype error
Commented out bin_image_to_1D -- dtype error
Commented out find_ring_center_acorr_iD -- dtype error
Renamed gauss_fit to gaussian_fit per changes Li Li implemented
Merge pull request #26 from giltis/broken_yaml_temp_fix

BUG: Commented funcs causing errors and renamed gauss_fit. See details.