这个调整会影响：

```
1) EventHelper#group_event_path when event is not the last should == "/events/1"
     Failure/Error: it { should == "/events/#{event.id}" }
       expected: "/events/1"
            got: "/rubyconfchina" (using ==)
     # ./spec/helpers/event_helper_spec.rb:68:in `block (4 levels) in <top (required)>'

  2) EventHelper#group_event_followers_path when event is not the last should == "/events/1/followers"
     Failure/Error: it { should == "/events/#{event.id}/followers" }
       expected: "/events/1/followers"
            got: "/rubyconfchina/followers" (using ==)
     # ./spec/helpers/event_helper_spec.rb:82:in `block (4 levels) in <top (required)>'

Finished in 1 minute 9.57 seconds
321 examples, 2 failures, 1 pending
```
已经在 https://github.com/saberma/19wu/commit/70a791f85b2578ff97fc3ed9423108c782eb51d6 中修正。