Libxml2 / tree.h not found in Xcode 6.1

Hi in my Xcode project I have added the libxml2.dylib framework. I am getting the error: libxml2 / tree.h not found.

I set the search path of the header "$ (SDKROOT) / usr / include / libxml2" and I tried other ways that were found in googling but I am still wrong.

How to solve this problem? I am using Xcode 6.1.