Updated request spec to require URL encoding for URLs
  instead of HTML encoding.

Updated request spec to allow for multi-valued options (required by
  recipes/search and cookbooks/search using and using_only options).

Updated recipes/search.php to support all required parameters.

Added recipes/rate.php and recipes/create.php. Both support all required
  parameters.
Merge branch 'master' of https://github.com/nicoloison/CPSC471-Project