added price rendering in the settings

git-svn-id: https://plugins.svn.wordpress.org/orbisius-cyberstore/trunk@847313 b8457f37-d9ea-0310-8a92-e5e31aec5664
upd readme.txt

git-svn-id: https://plugins.svn.wordpress.org/orbisius-cyberstore/trunk@847314 b8457f37-d9ea-0310-8a92-e5e31aec5664