Use CSV#generate to generate CSV:
Dropping support for 1.8.7 in v2.0.0
Merge pull request #5 from joneslee85/patch-1

Use CSV#generate to generate CSV:
Updates copyright year
Moves renderer to a Railtie after_initialize block

This should fix intermittent issues with it not working in production
environments when code is eager loaded.
Stop mentioning Ruby 1.9.2; adding Ruby 2.1.0 in README
Merge pull request #6 from joneslee85/patch-1

Stop mentioning Ruby 1.9.2; adding Ruby 2.1.0 in README