Two tiny problems when compiling src/cpp

[zhaoqxu-eth]

There are two tiny problems when I tried to compile the code:

1. Since we run the python in a virtual environment, it couldn't locate where the numpy is, so the problem below appears:

ggpzero_interface.cpp:4:10: fatal error: 'numpy/arrayobject.h' file not found

One way is to make a link:

ln -s /root/ggpzero/galvanise_zero/ggpzero/lib/python2.7/site-packages/numpy/core/include/numpy numpy

2. It seems that you forget #include <algorithm> in evlauator.cpp, so the error below appears. When I add the line, the code compiled successfully.

puct2/evaluator.cpp:244:10:`` error: no member named 'sort' in namespace 'std'

[richemslie]

1. I've seen the same error when I ran on AWS. I don't know of a clean solution. One idea was to
   add
   $ python -c "from distutils.sysconfig import get_python_lib ; print get_python_lib() + /numpy/include/core'"
   to the INCLUDE_PATHS in the makefile.
2. Thanks, will add it.