v0.1.5

Released to RubyGems on 2015-08-06.

• Fixed a NoMethodError (undefined method 'options' for nil) in update_counter_cache by reading the association's foreign_key from its reflection (#8, thanks @abookyun).
• Restructured CustomCounterCache::Model as an ActiveSupport::Concern (#8, thanks @abookyun).

Full changelog: v0.1.4...v0.1.5