Update Github action triggers and descriptions

Github actions for the demo workflow have been reconfigured to eliminate triggers from all pull requests and include triggers from published releases. The description in 'action.yml' has been revised to be more descriptive, and a 'csv-linter' keyword has been added to 'composer.json' for better discoverability.

.github/workflows/demo.yml

@@ -13,12 +13,11 @@
 name: Demo
 
 on:
-  pull_request:
-    branches:
-      - "*"
   push:
     branches:
       - 'master'
+  release:
+    types: [ published ]
 
 env:
   COLUMNS: 120

action.yml

@@ -10,7 +10,7 @@
 # @see        https://github.com/JBZoo/Csv-Blueprint
 #
 
-name: 'CSV Blueprint - Validator by schemas'
+name: 'CSV Blueprint - Lint and validate by schemas'
 description: 'Strict and flexible schema-based CSV file validation with the ability to report as GitHub Annotations in your PRs.'
 author: 'Denis Smetannikov <admin@jbzoo.com>'
 

composer.json

@@ -7,6 +7,7 @@
         "jbzoo",
         "csv",
         "csv-validator",
+        "csv-linter",
         "csv-validation",
         "csv-generation",
         "csv-format",