Update package version to 0.9.1

Revert "Convert from Coffeescript to plain JS"

This reverts commit 9d0d32a.

Bump version to 0.8.0

- Add support for https proxy

- Implement backoff strategy for failed https requests

- Fix umlaut decoding in incoming messages

- Add error handling to Fleep API response decoding
- Save users phone number to Redis

- Add support for Enter/Leave/Topic messages

- Remove support for automatic image uploads
- Improve error handling and documentation
- Use external libraries for common tasks

Bound web request error callback to the webRequest object context

Should fix an error with the @logger instance being unavailable.

https://github.com/anroots/hubot-fleep/pull/5

- Apply CoffeeScript lint (fix errors)

- Add .travis.yml

- Make conversation IDs dynamic

- Fix bug with editing Fleep messages