Send people to new issue wiki page.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

Library/Homebrew/brew.h.rb

 FORMULA_META_FILES = %w[README README.md ChangeLog COPYING LICENSE LICENCE COPYRIGHT AUTHORS]
-PLEASE_REPORT_BUG = "#{Tty.white}Please report this bug at #{Tty.em}http://github.com/mxcl/homebrew/issues#{Tty.reset}"
+PLEASE_REPORT_BUG = "#{Tty.white}Please follow the instructions to report this bug at #{Tty.em}https://github.com/mxcl/homebrew/wiki/new-issue#{Tty.reset}"
 
 def check_for_blacklisted_formula names
   return if ARGV.force?