Ensure Regexp for today's time is escaped, as time formats can contain pluses and other Regexp unfriendly characters, causing the Scenario 'Use site.time variable' to fail.

Signed-off-by: Nick Quaranto <nick@quaran.to>

features/step_definitions/jekyll_steps.rb

@@ -124,7 +124,7 @@ Then /^the "(.*)" file should not exist$/ do |file|
 end
 
 Then /^I should see today's time in "(.*)"$/ do |file|
-  assert_match Regexp.new(Time.now.to_s), File.open(file).readlines.join
+  assert_match Regexp.new(Regexp.escape(Time.now.to_s)), File.open(file).readlines.join
 end
 
 Then /^I should see today's date in "(.*)"$/ do |file|