Documentation for Matlab movmf code

Files included

1. movmf.m -- EM algorithm for mixture of vmfs
2. logbesseli.m -- Approximates log(besseli(s, x))
3. emsamp.m -- Samples points from a mixture of vmfs
4. mixinit.m -- Initialize the data structure for emsamp
5. unitrand.m -- Generate a unit random vector on hypersphere
6. vsamp.m -- Sample points from a given vMF
7. house.m -- Housholder tranformation on a vector