Build `mxnet` and `python-igraph`

compile_python_pkg_from_src.txt

# Compile `mxnet`
git clone --recursive https://github.com/dmlc/mxnet

cd mxnet
cp make/osx.mk ./config.mk
echo "USE_BLAS = openblas" >> ./config.mk
echo "ADD_CFLAGS += -I/usr/local/opt/openblas/include" >> ./config.mk
echo "ADD_LDFLAGS += -L/usr/local/opt/openblas/lib" >> ./config.mk
echo "ADD_LDFLAGS += -L/usr/local/lib/graphviz/" >> ./config.mk
make -j$(sysctl -n hw.ncpu)

# compile `python-igraph`
git clone --recursive -b release-0.7 https://github.com/igraph/python-igraph


# Install python package
sudo /usr/local/var/pyenv/versions/miniconda3-latest/envs/python34/bin/python3.4 setup.py install

sudo /usr/local/var/pyenv/versions/miniconda3-latest/envs/python35/bin/python3.5 setup.py install