Merge pull request #8 from mlfh/master

add mothod
Merge pull request #11 from mlfh/master

ok, merge
Merge pull request #14 from mlfh/qw

Qw
Modify Class2, Add Class3
add method
Modify Classes
Class3 add method
Class2 add method
Modify proj
modify sw

modify sw
Merge pull request #15 from ShiWeitq/master

modify sw,ok
shiwei_modify
Merge pull request #16 from ShiWeitq/master

shiwei_modify,ok
test_Merge
Merge pull request #17 from ShiWeitq/master

test_Merge ,ok