build(package): rename npm script cover to test:cover

And update `.travis.yml`

Author: remarkablemark

.travis.yml

@@ -8,7 +8,7 @@ script:
   - npx commitlint --from=HEAD~1
   - npm run lint
   - npm run dtslint
-  - npm run cover
+  - npm run test:cover
   - npm run build
   - npm run benchmark
 after_script:

package.json

@@ -10,14 +10,14 @@
     "build:min": "cross-env NODE_ENV=production webpack -o dist/html-react-parser.min.js",
     "build:unmin": "cross-env NODE_ENV=development webpack -o dist/html-react-parser.js",
     "clean": "rimraf dist",
-    "cover": "istanbul cover _mocha -- -R spec \"test/**/*\"",
     "coveralls": "cat coverage/lcov.info | coveralls",
     "lint": "eslint --ignore-path .gitignore .",
     "lint:fix": "npm run lint -- --fix",
     "dtslint": "dtslint .",
     "prepublishOnly": "npm run build",
     "release": "standard-version --no-verify",
-    "test": "mocha"
+    "test": "mocha",
+    "test:cover": "istanbul cover _mocha -- -R spec \"test/**/*\""
   },
   "repository": {
     "type": "git",