ci: pass signing vars for win/linux build, use 'dist' and try default publish semantics

.travis.yml

@@ -35,6 +35,8 @@ script:
 
       docker run --rm \
         -e GH_TOKEN=${GH_TOKEN} \
+        -e WIN_CSC_LINK=${WIN_CSC_LINK} \
+        -e WIN_CSC_KEY_PASSWORD=${WIN_CSC_KEY_PASSWORD} \
         -v ${PWD}:/project \
         -v ~/.cache/electron:/root/.cache/electron \
         -v ~/.cache/electron-builder:/root/.cache/electron-builder \

package.json

@@ -45,7 +45,8 @@
     "start-electron": "NODE_ENV=development electron ./dist/electron.js",
     "build-electron": "yarn run build && yarn run docs && yarn run pack",
     "docs": "bundle install; bundle exec jekyll build",
-    "dist": "yarn run build && electron-builder --publish always"
+    "dist": "yarn run build && electron-builder",
+    "release": "yarn run build && electron-builder"
   },
   "build": {
     "afterSign": "build/notarize.js",