Update ruby

https://devcenter.heroku.com/changelog-items/541

Merge pull request #139 from interagent/tmaier-dotenv-test

Replace custom .env.test load code with Dotenv

Merge pull request #133 from interagent/tmaier-app-rb

Add application.rb

Merge pull request #124 from interagent/brandur-render-errors

Render errors from within base endpoint

Merge pull request #118 from interagent/brandur-pry

Add Pry support for Pliny

Merge pull request #113 from interagent/brandur-rescue-errors-options

Pass in `raise` option instead of doing a condition include

Merge pull request #113 from interagent/brandur-rescue-errors-options

Pass in `raise` option instead of doing a condition include

Merge pull request #95 from flacoste/fix-test-logs

Run block when logging even if TEST_LOGS is false

Merge pull request #95 from flacoste/fix-test-logs

Run block when logging even if TEST_LOGS is false