Major rewrite:

* Migrate from Expectr to Net::SSH to allow for Windows hosts to run
CloudFlock.
* Improve object storage migration performance
* Improve Unix migration resiliance
* Store cleanup and exclusions tasks in ruby, rather than as text files.
* Refactor application code to improve re-use
Update readme
Update requirements
Make error shown for bad CLI args more explicit
Move CLI arg/UI decision to App#check_option

Makes guaranteeing presence of specific options more obvious.
Move dev logic to base.dev

The code which handles sanitizing the .dev suffix prior to loading
application files serves no purpose outside of development, and should
not be built into the gem.
Fix typo in Fog dependency version
Implement IP remediation
Fix const lookup for 1.9.3
Update verbiage to clarify source/destination IPs
Update IP checks for RFC1918 to depend on Addrinfo
Add suggestion for IP remediation UI
Fix pathname bug in cloudflock when wrapped

Fixes e.g. with ruby_executable_hooks
Update verbiage for IP remediation UI
Move provisioning wait to its own method
Add rescue in case API credentials are wrong
Update requirements
Version bumped to 0.7.0