bump typings vesion

Author: mseemann

package.json

@@ -81,7 +81,7 @@
     "tslint": "3.15.1",
     "tslint-loader": "2.1.5",
     "typescript": "2.0.6",
-    "typings": "1.4.0",
+    "typings": "1.5.0",
     "web-animations-js": "2.2.2",
     "webpack": "2.1.0-beta.25",
     "webpack-dev-server": "2.1.0-beta.4",