updated documentation for locscale.py authored by Arjen Jakobi's avatar Arjen Jakobi
## What is LocScale?
LocScale is a reference-based local amplitude scaling tool that used prior model information to improve contrast of cryo-EM density maps.
The LocScale methods
<img src="https://git.embl.de/jakobi/LocScale/raw/master/doc/img/EM_cyle_DM_1.jpg" width="400">
[__LocRes__](LocRes) - local resolution estimation based on windowed FSC calculation
[__LocScale__](LocScale) - local sharpening based on reference-based amplitude scaling
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