Removed use of `memoize` in EmberApp. Allows multiple EmberApps to be instantiated.
Merge pull request #1559 from Batterii/remove-memorize

Removed use of `memoize` in EmberApp. Allows multiple EmberApps to be instantiated.
Testing appveyor.yml
Update README.md
Merge pull request #1563 from WMeldon/windows-ci

Added appveyor.yml for Windows CI
Implement destroy command
Merge pull request #1547 from quaertym/destroy-command

Implement destroy command