Use rollup-plugin-node-resolve instead of rollup-plugin-npm

package.json

@@ -53,7 +53,7 @@
     "remap-istanbul": "^0.5.1",
     "rollup": "^0.20.2",
     "rollup-plugin-babel": "^1.0.0",
-    "rollup-plugin-npm": "^1.0.0",
+    "rollup-plugin-node-resolve": "^1.5.0",
     "rollup-plugin-replace": "^1.0.1",
     "sander": "^0.4.0",
     "source-map": "^0.5.3",

rollup.config.js

@@ -1,6 +1,6 @@
 import { readFileSync } from 'fs';
 import babel from 'rollup-plugin-babel';
-import npm from 'rollup-plugin-npm';
+import npm from 'rollup-plugin-node-resolve';
 import replace from 'rollup-plugin-replace';
 
 var pkg = JSON.parse( readFileSync( 'package.json', 'utf-8' ) );