README.md in berkshelf-6.1.1 vs README.md in berkshelf-6.2.0

- old
+ new

@@ -31,12 +31,16 @@
 
 ## Usage
 
 See [docs.chef.io](https://docs.chef.io/berkshelf.html) for up-to-date usage instructions.
 
+## CLI Usage
+
+Berkshelf is intended to be used as a CLI tool.  It is not intended to be used as a library.  Other ruby code should shell out to the command line tool to use it.
+
 ## Supported Platforms
 
-Berkshelf is tested and supported on Ruby 2.2 and 2.3.
+Berkshelf is tested and supported on Ruby 2.3 and 2.4.
 
 ## Configuration
 
 Berkshelf will search in specific locations for a configuration file. In order:
 