readme update

README.md

@@ -27,3 +27,29 @@ scripts to create our own reference database with our own sequences only and usi
     * formatted FASTA file
     * .ldx new nodes for missing taxid into the taxonomy to link to existing genus/family taxid
 
+## Environment
+
+To create environments with required softwares: 
+
+```
+conda env create -f envs/obitools_envs.yaml
+conda env create -f envs/pylib_cbdr.yaml
+```
+
+* Obitools
+
+```
+conda activate obitools
+```
+
+* Required python libraries to build custom reference database
+
+```
+conda activate pylib_cbdr
+```
+
+
+
+
+
+