Update README.md

Author: mauroalberti

README.md

@@ -50,9 +50,12 @@ The movement sense may assume two values: "N" for normal faults, and "R" for rev
 
 The other option to define faults is by defining a field storing the rake values.
 The rake should follow the Aki and Richards (1980) convention:
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 0° < rakes < 180° -> reverse movements
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 0° > rakes > -180° -> normal movements
 
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 When using rakes, slickenline trend and plunge does not need to be explicited.
 Moreover, when defined, rake values take priority above any defined trend-plunge and movement sense values (if present).