fix a spelling error in spec_helper
Merge pull request #383 from ktdreyer/spec-helper-spelling

fix a spelling error in spec_helper
Add Code Climate badge to repo README

Add Code Climate badge to repo README
Merge pull request #421 from mrb/master

Add Code Climate badge to repo README
Improved performance with counter_cache for tags (tag.taggings_count), taken from https://github.com/lichtamberg/acts-as-taggable-on/commit/52836c54d9abf1cc77be4df7b4c61cea90869c50