add reference to CLIG in README

README.md

@@ -9,6 +9,8 @@ It is designed to help make large GraphQL schemas more easily navigable, and is
 - GraphViz's [DOT language](https://graphviz.org/doc/info/lang.html) for visualization purposes (suitable for use with `dot`)
 - GraphQL SDL (suitable for feeding back into `gquil` itself, or using with other GraphQL-related tools)
 
+gquil aims to follow the [Command Line Interface Guidelines](https://clig.dev/).
+
 ## Installation
 
 Pre-built binaries for macOS and Linux are published to [GitHub releases](https://github.com/benweint/gquil/releases).
@@ -184,4 +186,4 @@ types
 types.Edible.possibleTypeNames
   + one list entry added:
     - Banana
-```
+```