Remove Travis badge from README

Add deprecation notice

Bump version to v5.2.3

Remove unused REQUEST_TIMEOUT reference

Merge pull request #45 from Quintasan/use-env-variable-for-rack-timeout

Merge pull request #46 from Quintasan/bump-rubocop-ruby-version

Disable Style/FrozenStringLiteralComment

Revert "Apply Style/FrozenStringLiteralComment style guide"

Util#underscore(term) is no longer destructive

Apply Style/FrozenStringLiteralComment style guide

Bump the version in the template as well

Bump Ruby version used by Rubocop to 2.5

Configure Rack::Timeout via env variable

Merge pull request #44 from olleolleolle/patch-1

README: Badges as SVG [ci skip]