Update sandbox bundle. Update package.json dist script

Author: danielcaldas

.gitignore

@@ -68,3 +68,4 @@ dist/
 coverage
 sandbox/rd3g.sandbox.bundle.js.map
 gen-docs
+.DS_Store

package.json

@@ -7,7 +7,7 @@
     "scripts": {
         "dev": "node_modules/.bin/webpack-dev-server -d --content-base sandbox --inline --hot --port 3002",
         "dist": "node_modules/.bin/npm-run-all --parallel dist:*",
-        "dist:rd3g": "webpack --config webpack.config.dist.js -p --display-modules",
+        "dist:rd3g": "rm -rf dist/ && webpack --config webpack.config.dist.js -p --display-modules",
         "dist:sandbox": "webpack --config webpack.config.js -p",
         "docs": "node_modules/documentation/bin/documentation.js build src/**/*.js -f html -o gen-docs && node_modules/documentation/bin/documentation.js build src/**/*.js -f md > gen-docs/DOCUMENTATION.md",
         "docs:lint": "node_modules/documentation/bin/documentation.js lint src/**/*.js",

sandbox/rd3g.sandbox.bundle.js

@@ -1,9 +1,6 @@
 const path = require('path');
 const webpack = require('webpack');
 
-// https://medium.freecodecamp.com/tree-shaking-es6-modules-in-webpack-2-1add6672f31b
-// http://moduscreate.com/optimizing-react-es6-webpack-production-build/
-
 module.exports = {
     context: path.join(__dirname, 'src'),
     entry: './index.js',