upgrade deps

Author: mourner

bin/pixelmatch

@@ -6,7 +6,8 @@ var PNG = require('pngjs').PNG,
     match = require('../.');
 
 if (process.argv.length < 5) {
-    return console.log('Usage: imagematch image1.png image2.png output.png [threshold=0.005] [includeAA=false]');
+    console.log('Usage: imagematch image1.png image2.png output.png [threshold=0.005] [includeAA=false]');
+    return;
 }
 
 var threshold = isNaN(+process.argv[5]) ? undefined : +process.argv[5],

package.json

@@ -7,12 +7,12 @@
     "pixelmatch": "bin/pixelmatch"
   },
   "dependencies": {
-    "pngjs": "^2.1.0"
+    "pngjs": "^3.0.0"
   },
   "devDependencies": {
-    "eslint": "^1.6.0",
-    "eslint-config-mourner": "^1.0.1",
-    "tap": "^2.1.1"
+    "eslint": "^3.2.2",
+    "eslint-config-mourner": "^2.0.1",
+    "tap": "^6.3.0"
   },
   "scripts": {
     "pretest": "eslint index.js bin/pixelmatch test/test.js",