chore: babelify rather than babel+pipe

Author: pemrouz

.popper.yml

@@ -2,7 +2,8 @@ globals:
   - <script src="https://cdn.polyfill.io/v1/polyfill.min.js"></script>
   - <script src="https://cdnjs.cloudflare.com/ajax/libs/chai/3.0.0/chai.min.js"></script>
 
-tests: (npm run build > /dev/null) && (babel test.js | browserify -
+tests: (npm run build > /dev/null) && (browserify test.js
+  -t babelify
   -i colors
   -i chai
   | sed -E "s/require\('chai'\)/window.chai/")

package.json

@@ -16,6 +16,7 @@
   "devDependencies": {
     "babel-cli": "*",
     "babel-preset-es2015": "*",
+    "babelify": "^7.3.0",
     "browserify": "*",
     "chai": "*",
     "coveralls": "*",
@@ -24,12 +25,12 @@
     "mocha-lcov-reporter": "*",
     "popper": "*",
     "rijs.components": "*",
-    "rijs.precss": "*",
-    "rijs.needs": "*",
-    "rijs.data": "*",
     "rijs.core": "*",
     "rijs.css": "*",
+    "rijs.data": "*",
     "rijs.fn": "*",
+    "rijs.needs": "*",
+    "rijs.precss": "*",
     "rijs.shadow": "*",
     "uglify-js": "*"
   },