Move vue to dev dependencies (#53)

Move vue to dev dependencies

Author: gilbitron

package.json

@@ -26,7 +26,6 @@
     "deploy": "npm run now-build && now && now alias"
   },
   "dependencies": {
-    "vue": "^2.6.7"
   },
   "devDependencies": {
     "@vue/cli-plugin-babel": "^3.4.1",
@@ -41,6 +40,7 @@
     "bootstrap": "^4.3.1",
     "eslint": "^5.14.1",
     "eslint-plugin-vue": "^5.2.2",
+    "vue": "^2.6.7",
     "vue-template-compiler": "^2.6.7"
   }
 }