start on zhi module, add requirement for segmenting text
fix travis
accedental add (+1 squashed commit)
Squashed commits:
[ef22ba7] add word segmentation test
add docstrings, update zhi test so it expoects nose to be run from the root dir
Merge branch 'word_segmentation' into develop

* word_segmentation:
  add docstrings, update zhi test so it expoects nose to be run from the root dir
  accedental add (+1 squashed commit) Squashed commits: [ef22ba7] add word segmentation test
  fix travis
  start on zhi module, add requirement for segmenting text