fix docs, readme
typofix
duplicate installation introduction
docstring for pypi
update intro in init docsstring
copyright 2014 NOW!
changes for 0.5.7
Merge branch 'dev'

* dev:
  changes for 0.5.7
  copyright 2014 NOW!
  update intro in init docsstring
  docstring for pypi
  duplicate installation introduction
  typofix
  fix docs, readme