update docs to reflect behaviour of pg_trgm
Fix master branch tests.
Have README report master build status, not latest.
Widen activerecord requirement
Add 4.2.0 gemfile
Merge pull request #67 from GordonDiggs/rails_42

We're compatible with ActiveRecord 4.2
Bump version to 3.2.1

Add a HISTORY.md doc to track what's new.
Merge HISTORY into CHANGELOG.
Contribution and Release guidelines.
Merge pull request #69 from textacular/merge_history_and_changelog

Merge HISTORY into CHANGELOG.
Merge pull request #53 from jekozyra/master

update docs to reflect behaviour of pg_trgm
Update CHANGELOG for merged PR #53.
Fix pry for experimentation.
Print queries to STDOUT from pry.
New test to exercise count.