Adding "-gd" as a debug postfix
Enabling cmake install on win32
Adding cmake config files to the install

Following http://www.cmake.org/Wiki/CMake/Tutorials/How_to_create_a_ProjectConfig.cmake_file
Test target now rely on the actual yajl_test built executable
Refactor yajl_test to use CTest instead of a custom target
Add CTest target for the performances tests
Overhaul to the documentation generation

- Following the traditional cake hierarchy
- Introducing an option to chose if the documentation generation occurs
- Using Cmake builtin Doxygen find package
Introducing a Travis CI recipe
Handle package generation with CPack
Updating the build documentation according to the new system
Merge pull request #1 from cloderic/build_overhaul

Build overhaul