Allow SeleniumSession's click_button to be called without an argument without blowing up.
Allow SeleniumSession's click_button to be called without an argument without blowing up.

brynary/webrat,brynary/webrat,jacksonfish/webrat,irfanah/webrat,jacksonfish/webrat,irfanah/webrat,m3talsmith/webrat,m3talsmith/webrat,johnbintz/webrat,irfanah/webrat,djanowski/webrat,djanowski/webrat,johnbintz/webrat