Added Readme

README.md

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+# Open Palette Generator
+
+## Description 
+Takes a CSV of colour name, cmyk percentages, and hex codes and generates palette files in the format
+
+Colour Name, C, M, Y, K, RGB Hex
+
+- gpl
+- scribus xml
+- krita xml (coming)
+
+## Usage
+
+python main.py "file_format" "input_csv" "output_file"
+
+Where "file_format" could be:
+- gpl : GIMP RGB Palette
+- scribus : Scribus CMYK XML Palette
+
+Where "input_csv" would be your input csv as in swatchos.csv
+
+Where "output_file" could be:
+- swatchos.gpl
+- swatchos.xml
+- swatchos.kpl
+Replacing swatchos with your colour palette name