Added a video that demonstrate CHILI tags in a real experiment
Rewrote the CMakeLists to support installation + other stuff

- support for installation
- support for optional compilation of the detector and creator (ON by default)
- configuration and installation of a pkgconfig file for easy integration in other
projects
- split the CMakeLists in 2 files
- added version number

While here:
- added a gitignore
- updated installation instructions