Update build instruction
Update build instruction

Vinzza/openMVG,poparteu/openMVG,yoshidaken/openMVG,Smozeley/openMVG,yoshidaken/openMVG,Vinzza/openMVG,openMVG/openMVG,caymard/openMVG,danylaksono/openMVG,caymard/openMVG,mojovski/openMVG,poparteu/openMVG,Smozeley/openMVG,openMVG/openMVG,mojovski/openMVG,danylaksono/openMVG,openMVG/openMVG,Smozeley/openMVG,mojovski/openMVG,Vinzza/openMVG,openMVG/openMVG,danylaksono/openMVG,poparteu/openMVG,yoshidaken/openMVG,poparteu/openMVG,openMVG/openMVG,caymard/openMVG