upgrade npm dependencies

package.json

@@ -25,32 +25,32 @@
   },
   "private": true,
   "devDependencies": {
-    "babel-jest": "^13.0.0",
+    "babel-jest": "^22.1.0",
     "bower": "^1.7.9",
-    "chai": "^3.5.0",
+    "chai": "^4.1.2",
-    "del": "^2.2.1",
+    "del": "^3.0.0",
     "gulp": "^3.9.1",
-    "jest-cli": "^13.0.0",
+    "jest-cli": "^22.1.4",
     "jshint": "^2.9.2",
     "jsxhint": "^0.15.1",
-    "laravel-elixir": "^5.0.0",
+    "laravel-elixir": "^6.0.0-17",
-    "mocha": "^2.5.3",
+    "mocha": "^5.0.0",
-    "mocha-sinon": "^1.1.5",
+    "mocha-sinon": "^2.0.0",
     "mocha-traceur": "^2.1.0",
     "precommit-hook": "^3.0.0",
-    "sinon": "^1.17.4",
+    "sinon": "^4.2.2",
     "sinon-chai": "^2.8.0",
-    "sinon-chrome": "^1.1.2",
+    "sinon-chrome": "^2.2.4",
     "traceur": "^0.0.111"
   },
   "dependencies": {
-    "bootstrap": "^3.3.6",
+    "bootstrap": "^4.0.0",
     "classnames": "^2.2.5",
     "jquery": "^3.0.0",
     "moment": "^2.13.0",
-    "react": "^15.1.0",
+    "react": "^16.2.0",
     "react-addons-css-transition-group": "^15.1.0",
-    "react-dom": "^15.1.0"
+    "react-dom": "^16.2.0"
   },
   "jshintConfig": {
     "asi": false,