simplify README

Merge pull request winpython#142 from stonebig/master

update py3compat from spyder to try fix PyQt5.5.0 compatibility

Merge pull request winpython#141 from stonebig/master

PyQt5 pyuic fix

Merge pull request winpython#140 from stonebig/master

remove pre-mingwpy code

Merge pull request winpython#134 from stonebig/master

more package labels

Merge pull request winpython#133 from stonebig/master

Qt5 fix to work with Spyder 3.0.0dev

Merge pull request winpython#110 from stonebig/master

small cleanup, base for 2015-05 release tag

Merge pull request winpython#112 from stonebig/master

fix missing package names  (for re-spin of WinPython 2015-05)

Merge pull request winpython#92 from stonebig/master

release 2015-04

Merge pull request winpython#72 from stonebig/master

changelogs for winpython 2015-03