added an essential logo when using RAISS with the command line

raiss/__main__.py

@@ -23,7 +23,7 @@ def launch_chromosome_imputation(args):
 
 def add_chromosome_imputation_argument():
 
-    parser = argparse.ArgumentParser()
+    parser = argparse.ArgumentParser(description="raiss command launch imputation for one trait on one chromosome")
     parser.add_argument('--chrom', required=True, help= "chromosome to impute to the chr\d+ format")
     parser.add_argument('--gwas', required=True, help= "GWAS to impute to the consortia_trait format")
 
@@ -41,7 +41,7 @@ def add_chromosome_imputation_argument():
     parser.add_argument("--ld-type", help= "Ld can be supplied as plink command --ld-snp-list output files (see raiss.ld_matrix.launch_plink_ld to compute these data using plink) or as a couple of a scipy sparse matrix (.npz )and an .csv containing SNPs index", default="plink")
     parser.add_argument('--ref-panel-prefix', help= "prefix for the reference panel files", default = "")
     parser.add_argument('--ref-panel-suffix', help= "suffix for the reference panel files", default = ".bim")
-    parser.add_argument('--minimum-ld', help = "this parameter ensure that their is enough typed SNPs around the imputed to perform a high accuracy imputation", default = 4)
+    parser.add_argument('--minimum-ld', help = "this parameter ensure that their is enough typed SNPs around the imputed loci to perform a high accuracy imputation", default = 4)
 
     parser.set_defaults(func=launch_chromosome_imputation)
     return(parser)
@@ -53,4 +53,16 @@ def main():
 
 
 if __name__=="__main__":
+    print("", file=sys.stderr)
+    print("  *******       *******    *******   *******   *******", file=sys.stderr)
+    print("  **     **    **     **     ***    **        **", file=sys.stderr)
+    print("  **     **   **       **    ***    **        **", file=sys.stderr)
+    print("  ** *****    **       **    ***      ******    ******", file=sys.stderr)
+    print("  **     **   ***********    ***           **        **", file=sys.stderr)
+    print("  **     **   **       **    ***           **        **", file=sys.stderr)
+    print("  **     **   **       **  *******   *******   *******", file=sys.stderr)
+    print("", file=sys.stderr)
+    print("", file=sys.stderr)
+
+
     main()