constructor arguments in the derived class t must be >= than problem fix

Author: ibrahimozdogan

package.json

@@ -18,7 +18,7 @@
     "babel-generator": "^6.26.1",
     "babel-traverse": "^6.26.0",
     "babylon": "^6.18.0",
-    "javascript-obfuscator": "^0.13.0",
+    "javascript-obfuscator": "^2.6.0",
     "jju": "^1.3.0",
     "semver": "^5.4.1",
     "source-map": "^0.6.1"