Fixed benchmarks

benchmarks/run.js

@@ -1,10 +1,19 @@
 
+// Try loading
+
+try {
+  var o3 = true;
+  canvasFactory = require('./node-o3-canvas/lib/o3-canvas')
+} catch (err) {
+  var o3 = false;
+  canvasFactory = function(){};
+}
+
 /**
  * Module dependencies.
  */
 
 var Canvas = require('../lib/canvas')
-  , canvasFactory = require('./node-o3-canvas/lib/o3-canvas')
   , canvas = new Canvas(200, 200)
   , largeCanvas = new Canvas(1000, 1000)
   , ctx = canvas.getContext('2d')
@@ -117,6 +126,7 @@ bm('moveTo() / arc() / stroke()', function(){
 // node-o3-canvas
 console.log('\n  node-o3-canvas\n');
 
+if (o3) {
   bm('lineTo()', function(){
     o3ctx.lineTo(0, 50);
   });
@@ -164,5 +174,8 @@ bm('moveTo() / arc() / stroke()', function(){
     o3ctx.arc(90,65,5,0,Math.PI*2,true);  // Right eye
     o3ctx.stroke();
   });
+} else {
+  console.log('cannot load');
+}
 
 console.log();