fix coveralls error

Author: xgeek-net

.travis.yml

@@ -34,7 +34,7 @@ install:
 script:
   - NODE_ENV=test npm run coveralls
 after_success:
-  - cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js
+  - cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js && rm -rf ./coverage
 before_deploy:
   - brew update
   - brew install bower

package-lock.json

@@ -64,6 +64,7 @@
   "devDependencies": {
     "app-builder-lib": "^20.43.0",
     "chai": "^4.2.0",
+    "coveralls": "^3.0.4",
     "electron": "3.1.9",
     "electron-builder": "^20.43.0",
     "electron-builder-squirrel-windows": "^20.43.0",