Make CI for OSX (GitHub?)

    running build_ext
    building 'M2Crypto.__m2crypto' extension
    swigging SWIG/_m2crypto.i to SWIG/_m2crypto_wrap.c
    swig -python -I/usr/local/Cellar/python/2.7.12/Frameworks/Python.framework/Versions/2.7/include/python2.7 -I/usr/include -includeall -modern -builtin -outdir build/lib.macosx-10.11-x86_64-2.7/M2Crypto -o SWIG/_m2crypto_wrap.c SWIG/_m2crypto.i
    SWIG/_m2crypto.i:31: Error: Unable to find 'openssl/opensslv.h'
    SWIG/_m2crypto.i:45: Error: Unable to find 'openssl/safestack.h'
    SWIG/_evp.i:12: Error: Unable to find 'openssl/opensslconf.h'
    SWIG/_ec.i:7: Error: Unable to find 'openssl/opensslconf.h'
    error: command 'swig' failed with exit status 1

Can't install on Mac OSX 10.11 El Capitan. I tried the hack below:

LDFLAGS="-L$(brew --prefix openssl)/lib" CFLAGS="-I$(brew --prefix openssl)/include" SWIG_FEATURES="-I$(brew --prefix openssl)/include" pip install m2crypto==0.22.5

It works for version 0.25.0, but not the latest 0.25.1. Any thoughts?