Modified the necessary files to save the headers, the library and all the related files on the subdirectory iri/<package_name>
Add plural _INCLUDE_DIRS and _LIBRARIES find cmake variables.
Add .gitignore file to ignore bin, build and lib directories

Added additional configuration for the ladybug camera in the constructor (explicitly disable the JPEG compression).
Initialized the pointer to a frame in the firewirecemra driver.

Added a function to get the image data with a provied pointer.

Explicitly added the openCV library version.

Solved a problem when publishing the mono image. It is a bayer image and not a mono image.

Added the possibility to change the framerate in the bumblebee camera.

Added a class for the bumblebee camera.
Added a class for the ladybug camera.
Added examples of both cameras. 

changed unsigned long long int to uint64_t for better compatibility in the stereo camera source code.