Some installation errors
Follow [this](http://www.pyimagesearch.com/2016/12/19/install-opencv-3-on-macos-with-homebrew-the-easy-way/) install opencv3, then run `brew install boost` to install latest version of boost 1.63.0. Then run:

```sh
mkdir release && cd release
cmake ..
make

# begin throw error

fatal error: 'opencv2/core/core.hpp' file not found
#include <opencv2/core/core.hpp>
         ^
1 error generated.
make[2]: *** [sse/CMakeFiles/opensse.dir/io/filelist.cpp.o] Error 1
make[1]: *** [sse/CMakeFiles/opensse.dir/all] Error 2
make: *** [all] Error 2
```
Then I follow [this](https://github.com/BVLC/caffe/issues/3876) add `include_directories(/usr/local/opt/opencv3/include)` to CMakeLists.txt file, run `cmake ..` and `make`, it outputs the new error as follows

```sh
[  3%] Building CXX object sse/CMakeFiles/opensse.dir/io/filelist.cpp.o
[  6%] Building CXX object sse/CMakeFiles/opensse.dir/io/reader_writer.cpp.o
[ 10%] Building CXX object sse/CMakeFiles/opensse.dir/features/util.cpp.o
[ 13%] Building CXX object sse/CMakeFiles/opensse.dir/features/generator.cpp.o
[ 16%] Building CXX object sse/CMakeFiles/opensse.dir/features/detector.cpp.o
[ 20%] Building CXX object sse/CMakeFiles/opensse.dir/features/galif.cpp.o
[ 23%] Building CXX object sse/CMakeFiles/opensse.dir/quantize/quantizer.cpp.o
[ 26%] Building CXX object sse/CMakeFiles/opensse.dir/index/tfidf.cpp.o
[ 30%] Building CXX object sse/CMakeFiles/opensse.dir/index/invertedindex.cpp.o
[ 33%] Linking CXX shared library ../lib/libopensse.dylib
ld: library not found for -lopencv_core
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [lib/libopensse.dylib] Error 1
make[1]: *** [sse/CMakeFiles/opensse.dir/all] Error 2
make: *** [all] Error 2
```

What is the problem?