An upgraded version of babel-node that uses .babelrc.

By default, babel-node-pp uses the babel-node exe local to the project (e.g in /node_modules). This may be subject to change as I work on the project.

Same as babel-node, except that presets and plugins found in .babelrc will be appended to any passed via the command line.

• Better handle complex .babelrcs

• Handle "env" tags (nested plugins)