Unable to install in Windows + Python3
Just saw https://github.com/coleifer/peewee/issues/763 . Closing this as it is a duplicate.

When trying to install peewee in Windows (with WinPython), I get the following error:

`
copying playhouse\__init__.py -> build\lib.win32-3.4\playhouse
running build_ext
cythoning playhouse/speedups.pyx to playhouse\speedups.c
building 'playhouse._speedups' extension
error: Unable to find vcvarsall.bat
`

This SO thread http://stackoverflow.com/questions/33834113/fail-to-install-peewee-under-winpython suggests that the solution would be as follows:

`
init_sqlite_ext is the wrong PyMODINIT_FUNC to call on Python 3. It should be PyInit__sqlite_ext
`

Would you be able to test this, and make the necessary change? (I could put in a pull request for it, if it is so desired...)
