README.md in humidifier-4.1.1 vs README.md in humidifier-4.2.0

@@ -23,10 +23,11 @@
     - [`display [stack] [?pattern]`](#display-stack-pattern)
     - [`stacks`](#stacks)
     - [`upgrade`](#upgrade)
     - [`upload [?stack]`](#upload-stack)
     - [`validate [?stack]`](#validate-stack)
+    - [`version`](#version)
   - [Parameters](#parameters)
   - [Shortcuts](#shortcuts)
     - [Automatic id properties](#automatic-id-properties)
     - [Anonymous mappers](#anonymous-mappers)
     - [Cross-stack references](#cross-stack-references)
@@ -269,9 +270,13 @@
 Upload one or all stacks in the repo to S3 for reference later. Note that this must be combined with the `humidifier` `s3_bucket` configuration option.
 
 #### `validate [?stack]`
 
 Validate that one or all stacks in the repo are properly configured and using values that CloudFormation understands.
+
+#### `version`
+
+Output the version of `Humidifier` as well as the version of the CloudFormation resource specification that you are using.
 
 ### Parameters
 
 CloudFormation template parameters can be specified by having a special `parameters.yml` file in your stack directory. This file should contain a YAML-encoded object whose keys are the names of the parameters and whose values are the parameter configuration (using the same underscore paradigm as `humidifier` resources for specifying configuration).