Merge pull request #4 from tincho/node-version

mention required node version 10

.npmrc

@@ -0,0 +1 @@
+engine-strict=true

README.md

@@ -18,7 +18,7 @@ CYP is a web-based frontend for [MPD](https://www.musicpd.org/), the Music Playe
 
 ## Installation
 
-Make sure you have a working MPD setup first.
+Make sure you have a working MPD setup first and Node version >= 10
 
 ```sh
 git clone https://github.com/ondras/cyp.git && cd cyp

package.json

@@ -15,5 +15,8 @@
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "author": "",
-  "license": "ISC"
+  "license": "ISC",
+  "engines": {
+    "node": ">=10.0.0"
+  }
 }