Merge pull request #1404 from gioman/master

[processing] add GRASS r.out.xyz

Author: alexbruy

python/plugins/processing/algs/grass/description/r.out.xyz.txt

@@ -0,0 +1,6 @@
+r.out.xyz
+r.out.xyz - Export a raster map to a text file as x,y,z values based on cell centers
+Raster (r.*)
+ParameterRaster|input|Name of input raster map|False
+ParameterString|fs|Field separator|
+OutputFile|output|Name for output file