enable xvfb on travis to fix tape-run

Author: goto-bus-stop

.travis.yml

@@ -7,3 +7,5 @@ sudo: false
 language: node_js
 script: "npm run test"
 # after_success: "npm i -g codecov && npm run coverage && codecov"
+before_script:
+  - export DISPLAY=:99.0; sh -e /etc/init.d/xvfb start

package.json

@@ -6,7 +6,7 @@
   "scripts": {
     "deps": "dependency-check . && dependency-check . --extra --no-dev",
     "start": "node .",
-    "test": "standard && npm run deps && (browserify test.js | tape-run)",
+    "test": "standard && npm run deps && browserify test.js | tape-run",
     "coverage": "nyc report --reporter=text-lcov > coverage.lcov"
   },
   "dependencies": {