Added before_script to run server before cypress tests

.travis.yml

@@ -6,7 +6,11 @@ addons:
     packages:
       # Ubuntu 16+ does not install this dependency by default, so we need to install it ourselves
       - libgconf-2-4
+
+before_script:
+  - npm start -- --silent &
+
 script:
   - npm run build
   - npm test
-  - $(npm bin)/cypress run --record
+  - npm run cypress:run

package.json

@@ -58,7 +58,8 @@
     "predeploy": "npm run build",
     "deploy": "gh-pages -d build",
     "predeploy-wikitree": "npm run build",
-    "deploy-wikitree": "./deploy-wikitree.sh"
+    "deploy-wikitree": "./deploy-wikitree.sh",
+    "cypress:run": "cypress run"
   },
   "homepage": ".",
   "browserslist": [