Use current environment for config
Use current environment for config

Instead of hard-coding 'development'. Dummy.

Fixes #53

philipbjorge/ember-cli-typescript-compiler,philipbjorge/ember-cli-typescript-compiler,flcdrg/ember-cli-typescript,flcdrg/ember-cli-typescript,kimroen/ember-cli-coffeescript,philipbjorge/ember-cli-typescript-compiler,kimroen/ember-cli-coffeescript,kimroen/ember-cli-coffeescript,bianjp/ember-cli-coffeescript