optimize: npm 'test' script should contain jest tests

.travis.yml

@@ -3,7 +3,6 @@ node_js:
   - 8
 script:
   - npm run lint && npm run test
-  - yarn jest
   - 'if [[ ${TRAVIS_PULL_REQUEST_BRANCH:-$TRAVIS_BRANCH} = "master" ]]; then npm install -g grunt npm@6.4 && grunt pre-build; fi'
 after_success:
   - openssl aes-256-cbc -K $encrypted_440d7f9a3c38_key -iv $encrypted_440d7f9a3c38_iv

package.json

@@ -8,7 +8,8 @@
   "scripts": {
     "start": "electron ./index.js",
     "compile": "grunt compile",
-    "test": "cross-env NODE_ENV=test ava --serial",
+    "test": "npm run ava && npm run jest",
+    "ava": "cross-env NODE_ENV=test ava --serial",
     "jest": "jest",
     "fix": "eslint . --fix",
     "lint": "eslint .",