Merge pull request #92 from bambooforest/master

cleaned up documentation; added example
upate docu
update apa error in docu
fixes #96, also clears mpl warning due to use of plt.close() instead of plt.clf()
patch for phylogeny.py now allowing for keywords to tweak the angle of 3d plots
Computes various string distances.
Update strings.py

Updated the description and relation to @Kondrak:2005
update stuff
Merge branch 'master' of https://github.com/lingpy/lingpy
update strings, correctiong py3 errors
commit first test for strings module
updated
Update README.md
update for phylostar
fix bug in tree loading
Merge branch 'master' of https://github.com/lingpy/lingpy
updated several files, now switching to NFC instead of NFD
change sorting in export
first pass at making lingpy run with python 2.7
on py 3.2: Ran 53 tests in 28.494s, coverage: 33%