Merge branch 'master' of https://github.com/ratal/mdfreader

Added attachment example in README.md

Merge pull request #171 from fschuetz04/patch-1

Correct arguments for mdfreader.Mdf in readme

multiple documentation improvements

adjust C with pyx, missed at commit

Merge branch 'dev'

fixed bug for unit32 not aligned data on 4 bytes but with less than 3…

…2 bitcount

Initialised for 2.7.7

updated setup.py warning for in case of no cython installed

bug fix in case of 4.11 version