Fix deprecation warning

Fix use of options to not override options property of EmberAddon super class

v0.7.0

Support for multiple configurations

v0.6.0

Add a filter for file extensions to options. This should avoid errors from processing files like '.DS_Store'.

Support for fingerprinted images

Now fingerprinted images are supported, for Browsers as well as for fastboot

v0.3.0

This release adds full FastBoot compatibility!