attempt to add the concordance vector recipe

Author: roblanf

doc/recipes/index.md

@@ -8,24 +8,23 @@ icon: question-circle
 doctype: manual
 tags:
 - manual
-description: Collection of one-off examples of analyses in IQ-TREE.
+description: Collection of examples that combine IQ-TREE with other software.
 sections_new_page: True
 sections:
 - name: Phylogenetic placement
   url: phylogenetic-placement
 - name: Perform a Goldman-Cox test 
   url: goldman-cox-test
+- name: Estimating gene, site, and quartet concordance vectors 
+  url: Estimating-gene%2C-site%2C-and-quartet-concordance-vectors
 ---
 
 # Recipes
 
-This is a collection of one-off examples of analyses in IQ-TREE. 
-<!--more-->
-One might call them "infrequently asked questions". The idea is a searchable and 
-reproducible database of analyses to help the community do what they need to with IQ-TREE.
+This is a collection of detailed examples analyses that combine IQ-TREE with other bits of code and/or software (hence 'recipes'). They are an attempt to go a bit beyond the usual user docs for software, getting closer to end-to-end analyses. The idea is a searchable and reproducible database of analyses to help the community do what they need to with IQ-TREE.
 
-If you'd like to request a recipe, please head over to the issues page and 
-use the 'recipe wanted' label.
+If you'd like to request a recipe, please head over to the issues page and use the 'recipe wanted' label, and describe in as much detail as possible (with references and example data if you can) what it is you would like.
 
 * [How to do phylogenetic placement](phylogenetic-placement)
 * [How to perform a Goldman-Cox test](goldman-cox-test)
+* [Estimating gene, site, and quartet concordance vectors](Estimating-gene%2C-site%2C-and-quartet-concordance-vectors)