v0.3.4

One change: Allow bundle build directory naming to be specified by a function
passed as a parameter to parseBundle via option object key named
"bundleBuildDirectoryParser". The function is passed the bundle object
(see lib/bundle.js).

i.e.

var locator = new Locator({buildDirectory: 'build'}),
    opts = {bundleBuildDirectoryParser: function(bundle) {
            return bundle.name + '_' + bundle.version;
        }};

locator.parseBundle(__dirname, opts).then(/* ... */);