Updated 'Summary' as discussed in #20
Added GSL wrappers for computing skewness and kurtosis of a sample
Dropped 'Option' module from 'Internal'
Programmers like moving things back and forth, I'm no exception
Added initial implementation of KS goodness of fit test -- #18

  Only one-sided hypotheses are supported at the moment
Added two-sided P-value calculation for KS goodness of fit test

  #18 almost done!
Added a special case for large n and D > .99 to KS goodness of fit test
Added two-sample KS test -- closes #18

  Current implementation does not support ties (until I find an appropriate
  paper on the subject :)
Getting ready for testing -- changed layout to Core-style
Added basic unit tests for 'Tests.T'
Trying out Travis CI configuration

  See http://blog.mlin.net/2013/02/testing-ocaml-projects-on-travis-ci.html
  for detail
Added Travis CI image to 'README.md'
Fixed GSL Debian package name
Turns out the correct OPAM name is 'ounit', not 'oUnit'
Added 'camlp4' to '$DEBS' in '.travis.sh'
Try installing OCaml via OPAM
Be quiet when intalling OCaml and don't ask questions
Added tests for 'Tests.ChiSquared'
Added tests for 'Tests.KolmogorovSmirnov'
Added MLE for distributions from sample data. Issue #22.