Add r.usler algorithm

Médéric RIBREUX · Médéric RIBREUX · commit 6ad29b5fb29e · 2016-02-27T10:15:25.000+01:00
diff --git a/python/plugins/processing/algs/grass7/description/r.usler.txt b/python/plugins/processing/algs/grass7/description/r.usler.txt
@@ -0,0 +1,6 @@
+r.usler
+Computes USLE R factor, Rainfall erosivity index.
+Raster (r.*)
+ParameterRaster|input|Name of annual precipitation raster map [mm/year]|False
+ParameterSelection|method|Name of USLE R equation|roose;morgan;foster;elswaify|0
+OutputRaster|output|USLE R Raster
