This shell script takes a github website path to any file/folder on github and using svn export downloads just that file/folder from github.
./github-downloader [website url to file/folder]
#Example
./github-downloader https://github.com/twbs/bootstrap/tree/master/examples/carousel
This will export the carousel example folder from the twitter boostrap project.
./github-downloader https://github.com/twbs/bootstrap/tree/master/examples/carousel/carousel.css
This will export just the carousel.css file from the twitter boostrap project.