switch_file search path setting and per-project config

[watsonsong]

When I work on a project which header file and source file divide into different folders, it hard to use switch_file command to switch the files. I try some plugin like switch_script(github.com/amireh/SwitchScript), but it can not set per-project path. I want to build a sublime project on the source repository that anybody download it and use directly.
For the purpose, it would be better to have a unified place in project setting to set search path, that each plugins can use it, like SublimeClang or SwitchScript.