Replace feature_table.tsv

test_data/feature_table.tsv

 # Constructed from biom file
-#OTU ID S01_1	S01_2	S01_3	S02_1	S02_2	S02_3	S03_1	S03_2	S03_3
+#OTU_ID	S01_1	S01_2	S01_3	S02_1	S02_2	S02_3	S03_1	S03_2	S03_3
 amplicon_cluster_11880	70	72	63	0	0	0	100	39	0
 amplicon_cluster_24782	77	87	87	0	0	0	93	0	0
 amplicon_cluster_3348	96	75	91	82	0	95	34	59	59
@@ -26,4 +26,4 @@ amplicon_cluster_12494	0	0	0	0	0	0	76	86	9
 amplicon_cluster_13714	0	0	0	0	0	0	4	78	93
 amplicon_cluster_13823	0	0	0	0	0	0	65	5	89
 amplicon_cluster_13871	0	0	0	0	0	0	1	67	97
-amplicon_cluster_15407	0	0	0	0	0	0	91	17	100
+amplicon_cluster_15407	0	0	0	0	0	0	91	17	100
\ No newline at end of file