cfonts_to_py.py improved help message

tft_fonts/cfonts_to_py.py

@@ -165,7 +165,8 @@ def load_c(sourcefiles, destfile):
 
 if __name__ == "__main__":
     parser = argparse.ArgumentParser(__file__, description =
-       "Convert C fonts generated by GLCD font creator to Python.\nSample usage:\n ./cfonts_to_py Arial16x16.c ubuntu5x7.py\nProduces fonts.py")
+       "Utility for producing a fonts file for the tft module.\nConvers C fonts generated by GLCD font creator to Python.\nSample usage:\n./cfonts_to_py.py Arial16x16.c Ubuntu_Medium17x19.c\nProduces fonts.py",
+       formatter_class = argparse.RawDescriptionHelpFormatter)
     parser.add_argument('infiles', metavar ='N', type = str, nargs = '+', help = 'input file paths')
     parser.add_argument("--outfile", "-o", default = 'fonts.py', help = "Path and name of output file", required = False)
     args = parser.parse_args()