chore(dep): save standard-version and create npm script release

Save to devDependencies:
* standard-version@4.2.0

Author: remarkablemark

package.json

@@ -5,6 +5,7 @@
   "author": "Mark <mark@remarkablemark.org>",
   "main": "index.js",
   "scripts": {
+    "release": "standard-version",
     "build-unmin": "NODE_ENV=development webpack index.js dist/html-react-parser.js",
     "build-min": "NODE_ENV=production webpack -p index.js dist/html-react-parser.min.js",
     "clean": "rm -rf dist",
@@ -41,6 +42,7 @@
     "react": "^16",
     "react-dom": "^16",
     "webpack": "^3.0.0"
+    "standard-version": "^4.2.0"
   },
   "peerDependencies": {
     "react": "^0.14 || ^15 || ^16"