ci(travis): Fix git url

Author: jourdain

package.json

@@ -10,7 +10,7 @@
   ],
   "repository": {
     "type": "git",
-    "url": "git+https://github.com/kitware/simput.git"
+    "url": "https://github.com/kitware/simput.git"
   },
   "license": "BSD-3-Clause",
   "bugs": {