merge chromo

tasks/merge_chromo.wdl

 	
 	command <<<
 
-		cat ${sep=" " mendelian_vote_summary} > ${sample_name}.all_chromo.mendelian.vote.txt
+		paste ${sep=" " mendelian_vote_summary} > ${sample_name}.all_chromo.mendelian.vote.txt
+
+		paste ${sep=" " mendelian_vote_summary} > ${sample_name}.colnames 
 
 	>>>
 
 	}
 	output {
 		File mendelian_vote_summary_all_chromo = "${sample_name}.all_chromo.mendelian.vote.txt"
+		File colnames = "${sample_name}.colnames"
 	}
 }