Update Readme.md

README.md

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 # one-click-gen
-Plugin for Oasis montaj / One-click export mag and gama maps
+It's a plugin for Oasis montaj (written in GXC) which allows the one-click generation and export of magnetic and gamaspectometric maps.
+* Requires Geosoft 9.0 or higher;
+* Grids are generated using Geosoft's BIGRID method with presort options;
+* Everything is exported into 300 dpi geotiffs for compatibility.
+
+## GAMASPECTOMETRIC GENERATOR (GAMAGEN)
+The GAMAGEN generates and exports the following maps: Total Count, Thorium/Uranium/Potassium rates, their ratios and ternary maps.
+
+## MAGNETIC GENERATOR (MAGEN)
+The MAGEN generates and exports the following maps: Total Magnetic Intensity (TMI), Vertical/Horizontal Derivatives, Analytic Signal and Tilt Derivative.
+
+## Usage
+Just load the gx (either gamagen or magen), select the channels and press OK.