my fisrt ImageLoader Library.
cache and save images.
of course i will update.
##How to use
ImageLoader imageLoader = new ImageLoader();
// use memory cache.
imageLoader.setImageCache(new MemoryCache());
//use disk cache.
imageLoader.setImageCache(new DiskCache());
//use double cache.
imageLoader.setImageCache(new DoubleCache());
//design by yourself.