Merge pull request #39 from Shekharrajak/dependabot/npm_and_yarn/bootstrap-4.3.1

Bump bootstrap from 4.0.0 to 4.3.1

Author: Shekharrajak

package.json

@@ -5,7 +5,7 @@
   "devDependencies": {
     "anchor-js": "^4.1.1",
     "autoprefixer": "^9.1.5",
-    "bootstrap": "4.0.0",
+    "bootstrap": "4.3.1",
     "browserify": "^13.0.0",
     "connect-livereload": "~0.6.0",
     "grunt": "~1.0.1",