add file

Signed-off-by: liushuxin <linux.book.heart@gmail.com>
read and write

Signed-off-by: liushuxin <linux.book.heart@gmail.com>
{}

Signed-off-by: liushuxin <linux.book.heart@gmail.com>
modify readfile

Signed-off-by: liushuxin <linux.book.heart@gmail.com>
Merge branch 'master' of https://github.com/87170360/ProtocolBuffer
modify

Signed-off-by: liushuxin <linux.book.heart@gmail.com>
123

Signed-off-by: liushuxin <linux.book.heart@gmail.com>
Merge https://github.com/87170360/BinaryTree

Conflicts:
	readfile.h