Update grunt-browserify to update browserify to provide a better buffer to create-hmac's safe-buffer

Author: Henry Mollman

package.json

@@ -82,7 +82,7 @@
     "grunt-autoprefixer": "2.2.0",
     "grunt-aws": "^0.6.1",
     "grunt-bg-shell": "2.3.1",
-    "grunt-browserify": "4.0.0",
+    "grunt-browserify": "5.0.0",
     "grunt-cli": "0.1.13",
     "grunt-compile-handlebars": "git://github.com/Runnable/grunt-compile-handlebars.git#1f70886f5282086d0eac33d93fad2f2628654f32",
     "grunt-concurrent": "1.0.1",