Major improvements, version 0.1.0

[martinb3]

• Remove redis_ from recipe names (cleaner to see, e.g. redis-multi::foo)
• Fix some rubocop and foodcritic complaints
• _find_all.rb becomes public, renamed to find_all.rb
• Added default attribute for sentinel port number
• Ensure chef-solo usage doesn't fatal out

[martinb3]

All kitchen tests passing.

[martinb3]

@JasonBoyles approved it, but didn't have access to rackspace-cookbooks.