Build OpenCV for node.sh

# Clone fresh copy of OpenCV
git clone https://github.com/Itseez/opencv.git opencv-node

# Prepare build and install dirs
mkdir opencv-node-build
mkdir opencv-node-bin
cd opencv-node-build

# Configure OpenCV
cmake -DCMAKE_BUILD_TYPE=RELEASE \
      -DBUILD_DOCS=OFF           \
      -DBUILD_EXAMPLES=OFF       \
      -DBUILD_SHARED_LIBS=OFF    \
      -DBUILD_opencv_java=OFF    \
      -DBUILD_JASPER=ON          \
      -DBUILD_ZLIB=ON            \
      -DBUILD_TESTS=OFF          \
      -DBUILD_PERF_TESTS=OFF     \
      -DBUILD_PNG=ON             \
      -DBUILD_TIFF=ON            \
      -DBUILD_JPEG=ON            \
      -DWITH_JASPER=ON           \
      -DWITH_OPENEXR=OFF         \
      -DWITH_PNG=ON              \
      -DWITH_TIFF=ON             \
      -DWITH_WEBP=OFF            \
      -DWITH_JPEG=ON             \
      ../opencv-2.4.6.1/

# Build and install OpenCV libs
make install