Merge pull request #782 from ineverov/size_instead_of_count

Use size instead of count

lib/capybara/result.rb

@@ -19,14 +19,14 @@ module Capybara
     end
 
     def find!
-      raise find_error if @result.count != 1
+      raise find_error if @result.size != 1
       @result.first
     end
 
     def find_error
-      if @result.count == 0
+      if @result.size == 0
         Capybara::ElementNotFound.new("Unable to find #{@query.description}")
-      elsif @result.count > 1
+      elsif @result.size > 1
         Capybara::Ambiguous.new("Ambiguous match, found #{size} elements matching #{@query.description}")
       end
     end