simplified BCM2708-check

Author: Martin Schuhfuss

lib/ws281x-native.js

@@ -5,11 +5,10 @@ function getNativeBindings() {
     // in the wrong environment, so we make sure that at least everything we can
     // test for matches the raspberry-pi before loading the native-module
     if(process.arch === 'arm' || process.platform === 'linux') {
-        var fs = require('fs');
 
         // will only work on the Broadcom BCM2708
         var isBCM2708 = (function() {
-            var cpuInfo = fs.readFileSync('/proc/cpuinfo').toString();
+            var cpuInfo = require('fs').readFileSync('/proc/cpuinfo').toString();
 
             return /hardware\s*:\s*bcm2708/i.test(cpuInfo);
         } ());