add scheme proportion table

converted-scheme-proportion.csv

@@ -0,0 +1,6 @@
+Scheme,het_het,het_hom,het_wt,hom_het,hom_hom,wt_het
+het_hom x hom_het,,0.75,,,0.25,
+het_het x hom_wt,,,,1.0,,
+wt_het x het_wt,,,0.67,,,0.33
+wt_hom x het_wt,0.5,,,,,0.5
+wt_hom x hom_wt,1.0,,,,,