whhxz

@Sccotliu in `scripts/get_data.sh` source ,you can download data from http://sketch-code.s3.amazonaws.com/data/all_data.zip by yourself ,then unzip the datazip ```sh # scripts/get_data.sh mkdir ../data wget http://sketch-code.s3.amazonaws.com/data/all_data.zip -O ../data/all_data.zip unzip ../data/all_data.zip -d ../data/all_data ```