prevented errors in the installation caused by old plugins
Stop old plugins breaking installer read me

= 2.2.1 - 10/09/2014 =
* Fix - Small tweak to the installer to prevent errors caused by
outdated plugins.
* Tweak - Small tweak to update notification to remind users to update
old plugins prior to install.
fixed the mijireh plugin slug
updated the readme.txt
Fix - Saving of variation stock when parent stock management is disabled.
fixed the "open_basedir restriction in effect" error caused by WC_LOG_DIR
For regular products, ensure stock level saves on product creation.
Bump versions
fixed WC_LOG_DIR path
Update unit tests to match log directory change.