This allows the source to be used as-is, without install step,
by adding a include path to yajl's include directory.
I find this to be a important change for the project structure, as it allows it to be
used more readily in other projects without modifying it.
Move src/api to include/yajl.
I think issue #34 is related.
It would be nice to hear any comments on this.
Just adding my support here. Integrating yajl with an existing build process is harder than it needs to be. I've had to alter the CMakeLists and some of the source.