fix pathing issue in version command

Author: bmuenzenmeyer

core/lib/patternlab.js

@@ -77,7 +77,7 @@ var patternlab_engine = function (config) {
     plutils = require('./utilities'),
     patternlab = {};
 
-  patternlab.package = fs.readJSONSync('./package.json');
+  patternlab.package = fs.readJSONSync(path.resolve(__dirname, '../../package.json'));
   patternlab.config = config || fs.readJSONSync(path.resolve(__dirname, '../../patternlab-config.json'));
 
   var paths = patternlab.config.paths;