Kind of working, updated cornerstone-core lib.

Packages/ohif-cornerstone/package.js

@@ -6,7 +6,7 @@ Package.describe({
 
 Npm.depends({
     hammerjs: '2.0.8',
-    'cornerstone-core': '2.2.4',
+    'cornerstone-core': '2.2.6',
     'cornerstone-tools': '3.0.0-b.959',
     'cornerstone-math': '0.1.6',
     'dicom-parser': '1.8.0',