remove a tailing slash char in direcotry in createapp.
remove a tailing slash char in direcotry in createapp.

Because mac
  cp a/b/c/ d/   will copy all files in directory c to d, not containing c self;
but linux
  cp a/b/c/ d/   will copy all files in directory c to d, containing c self;

So change to
  cp a/b/c d/
now.

Signed-off-by: Daogang Tang <6435653d2db08e7863743a16df53ecbb301fb4b0@gmail.com>

daogangtang/bamboo,daogangtang/bamboo