Automatic map interpretation with map_to_model

Tom Terwilliger describes how to use the automated cryo-EM map interpretation tool in the Phenix GUI to optimize the sharpening of a map and build a model. ---------------- Reference: A fully automatic method yielding initial models from high-resolution electron cryo-microscopy maps Thomas C. Terwilliger, Paul D Adams, Pavel V Afonine, Oleg V Sobolev (2018). bioRxiv doi: https://doi.org/10.1101/267138