docs (document) : initial commit against the branch

docs/index.md

@@ -172,7 +172,9 @@ The `phen` command is used phenotype-related operations.
 
   - `-d`, `--phen-dir`: (Optional) Directory of current phenotype configuration (the default is ./build/phen).
   - `-old`, `--phen-dir-old`: (Required) Directory of old phenotype version)
- 
+
+# Development
+
 # GitLab Workflow for Managing Releases
 
 ## Branching Strategy