refactor to improve API and functionalities [WIP]
add basic specs, configure Travis
add visual_honeypots option; controller method with more options; more specs
new option :on_spam, allow to call custom callbacks
insert plugin into Rails via Railtie
update README with new API and options; rename some attributes and methods
allow controller flow with only specific honeypot (no scope), fix docs
fix doc [ci_skip]
improve view helper specs
add rake task to start the spec/dummy app; add Development section to Readme
little Readme fixes [ci skip]
Merge pull request #2 from markets/refactor

Refactor