Fix an issue where you couldn't vote under Ruby 1.9.2 and higher.
Fix an issue where you couldn't vote under Ruby 1.9.2 and higher.

Calling instance_eval yields self to any called lambdas, so voting failed every time we tried to look up current_user (see https://gist.github.com/479572).

So instead, we use a Proc.

onedesign/voting_booth,onedesign/voting_booth