public static void zip(File src, OutputStream os) throws IOException {
		zip(src, os, Charset.defaultCharset().name(), true);
	}
Compresses the given src file(or directory) and writes to the given
output stream with sub directory.

@param src src
@param os  output stream
@throws IOException IOException
ngrinder-core/src/main/java/org/ngrinder/common/util/CompressionUtils.java