Add configuration option to catch debugged exceptions (or not)
Fix travis
Doc update: Data is sent in all environments

Update the README to explain that data will be sent by default in all
environments, not just staging and production.
Merge pull request #195 from lorin/doc-logs-all-envs

Doc update: Data is sent in all environments
Merge pull request #192 from greysteil/catch-debugged-exceptions

Add configuration option to catch debugged exceptions (or not)
Rack env vars are generally expected to be strings

See josevalim/rails-footnotes#115.