init
added normal computations
added license
added adaptive normals and some plotting utilities
added license file
added example sensor (spinning Hokuyo)
moved KdTree into utils

--HG--
rename : @KdTree/KdTree.m => utils/@KdTree/KdTree.m
rename : @KdTree/private/nanoflann_mex.cc => utils/@KdTree/private/nanoflann_mex.cc
removed unsued quaternion externals function
first working version + covariance of estimated parameters
added type checking for Mat class
added some externals
fixed covariance estimate expression
stuff
removed binary stuff
updated ignore rules
working on the new simulator
added checks for division by zero, etc
added notes about the alignement of mex allocator. It is clearly not aligned!
removed normal weights for now
cleanup somet things

--HG--
rename : get_rot_mat.m => utils/get_rot_mat.m