add node_modules to gitignore
add node_modules to gitignore

cjgammon/SnapSVG-Animator,cjgammon/Flash-Plugin-SnapPlatform,cjgammon/SnapSVG-Animator,cjgammon/SnapSVG-Animator,cjgammon/Flash-Plugin-SnapPlatform,cjgammon/Flash-Plugin-SnapPlatform,cjgammon/SnapSVG-Animator,cjgammon/SnapSVG-Animator,cjgammon/SnapSVG-Animator,cjgammon/SnapSVG-Animator,cjgammon/Flash-Plugin-SnapPlatform,cjgammon/SnapSVG-Animator,cjgammon/Flash-Plugin-SnapPlatform,cjgammon/SnapSVG-Animator,cjgammon/Flash-Plugin-SnapPlatform,cjgammon/Flash-Plugin-SnapPlatform,cjgammon/SnapSVG-Animator,cjgammon/Flash-Plugin-SnapPlatform,cjgammon/Flash-Plugin-SnapPlatform