chore(package): update enzyme to version 3.4.4

Closes #106

Author: greenkeeper[bot]

package.json

@@ -135,7 +135,7 @@
     "electron-builder": "^19.8.0",
     "electron-builder-http": "^19.15.0",
     "electron-devtools-installer": "^2.0.1",
-    "enzyme": "^3.0.0",
+    "enzyme": "^3.4.4",
     "express": "^4.14.0",
     "extract-text-webpack-plugin": "^3.0.0",
     "file-loader": "^1.1.5",