Add new navbar, jumbotron, cards, and footer components.

package.json

@@ -12,14 +12,14 @@
 		"gulp-cached": "~1.1.0",
 		"gulp-chmod": "~1.3.0",
 		"gulp-concat": "~2.6.0",
-		"gulp-git": "~2.4.2",
 		"gulp-if": "^2.0.1",
+		"gulp-git": "~2.4.2",
+		"gulp-pug": "~3.2.0",
 		"gulp-jade": "~1.1.0",
 		"gulp-livereload": "~3.8.1",
 		"gulp-plumber": "~1.1.0",
-		"gulp-pug": "~3.2.0",
 		"gulp-rename": "~1.2.2",
-		"gulp-sass": "^4.0.1",
+		"gulp-sass": "~2.3.1",
 		"gulp-sourcemaps": "~1.6.0",
 		"gulp-uglify": "~1.5.3",
 		"minimist": "^1.2.0"