Add README.md link to grunt-markdownlint, tweak package.json metadata.

README.md

@@ -34,6 +34,7 @@ cases come directly from that project.
 ### Related
 
 * [markdownlint-cli command-line interface for Node.js](https://github.com/igorshubovych/markdownlint-cli)
+* [grunt-markdownlint for the Grunt task runner](https://github.com/sagiegurari/grunt-markdownlint)
 * [vscode-markdownlint extension for VS Code](https://marketplace.visualstudio.com/items/DavidAnson.vscode-markdownlint)
 * [markdownlint/mdl gem for Ruby](https://rubygems.org/gems/mdl)
 

package.json

@@ -3,7 +3,7 @@
   "version": "0.2.0",
   "description": "A Node.js style checker and lint tool for Markdown/CommonMark files.",
   "main": "lib/markdownlint.js",
-  "author": "David Anson (http://dlaa.me/)",
+  "author": "David Anson (https://dlaa.me/)",
   "license": "MIT",
   "homepage": "https://github.com/DavidAnson/markdownlint",
   "repository": {
@@ -37,8 +37,8 @@
   "keywords": [
     "markdown",
     "lint",
+    "markdownlint",
     "md",
-    "check",
     "validate"
   ],
   "browser": {