Updating ignore_prefix to support an array
Updating docs
Ensure backwards compatibility by converting `ignore_prefix` strings to arrays.
Update template.rb

Ensure that the regex to replace paths, always matches from the front of the string.
Fixing tests
Refactored ignore_prefix logic into engine.rb (instead of template.rb). Updated tests.
Merge pull request #54 from AaronV/feature/ignore_prefix_array_support

Feature: add array support to config.angular_templates.ignore_prefix