modif index

Author: HadrienG

README.md

@@ -7,6 +7,8 @@ bioinformatics subjects:
 
 * [Introduction to Unix](unix/first_steps.md)
 * [File formats](file_formats.md)
+* [Quality Control](qc.md)
+* [Variant Calling](variant_calling.md)
 * [16s Metabarcoding Analysis](16s.md)
 * [Whole Metagenome Sequencing](wms.md)
 * [Metagenome Assembly](meta_assembly.md)