* plunker builder removes files and scripts not needed in plunkers (e.g., systemjs.config.js)
* no longer adds placeholder README.md (deemed a distraction)
* tag is now "Angular" instead of "Angular2"
* new plnkr.json "includeSystemConfig" option adds systemjs.config.js back; needed for testing plnkrs.
* incidentally changes comment "Polyfill(s)" to "Polyfills" in all index.html
The serve-and-sync tasks wait for `_copy-example-boilerplate` to finish
Differentiates app compile, spec compile, and test failures
StyleGuide (for documentators) up-to-date
Filipe Silva
Ward Bell
Jesús Rodríguez
Peter Bacon Darwin
Jay Traband