Readme bump for #3159
Fix via #3212 for 2.0.11
Replaced placeholder plugin

As committed on master branch:
- https://github.com/woothemes/woocommerce/commit/d1fbc3b7f10793848951b3e6ce61662df7cafda6
Readme line for new placeholder plugin
Rounding fix for Mijireh tax ex. price

As committed on master branch:
- https://github.com/woothemes/woocommerce/commit/02c754b6746e69112d9ee24f509d271f5a182357
- https://github.com/woothemes/woocommerce/commit/db95f1e772656b64b1be9f19364ff18392389beb
Fixed is_on_sale function for products without prices
Readme for #3189
Handling for multiselect fields on checkout, and a filter for third party handling

As committed on master branch:
- https://github.com/woothemes/woocommerce/commit/c3602cf17a89aa835f1a2fa9481b616c3d10914b
Check product exists before showing it as an option

As committed on master branch:
- https://github.com/woothemes/woocommerce/commit/28933f1fec2cb2feee2cf43f6d319990f5753088
Updated blockui to prevent errors in WP 3.6

As committed on master branch:
- https://github.com/woothemes/woocommerce/commit/559d7b9759609efe1d860a948e057606f3abf6e0
Data sanitization

As committed on master branch:
- https://github.com/woothemes/woocommerce/commit/3277b485b835ef1aa58d9c1025c9adc190eeca33
Readme bump
Offer tax class option per variation to use same tax class as parent

As committed on master branch:
- https://github.com/woothemes/woocommerce/commit/356202ce19db3846b05ac5005b30e318583c952d
2.0.11 version bump
Add Simplified Chinese