Functional coefficients calculation (function initialization()).
Modification of the "white balance", so we can always have values
between 0 and 255 (regardless to the number of out-channels that we
have)
GUI first version (add channel)
Merge branch 'master' of https://github.com/xalpha/maracuja

Conflicts:
	lib/include/maracuja/Channel.hpp
	lib/include/maracuja/Spectrum.hpp
Merge branch 'master' of https://github.com/xalpha/maracuja