Added a -r flag to git-flow-feature-pull to support pull with rebase
Added a -r flag to git-flow-feature-pull to support pull with rebase

Signed-off-by: Vincent Driessen <87e1f221a672a14a323e57bb65eaea19d3ed3804@3rdcloud.com>

oddnoc/gitflow,yonglehou/gitflow-1,JelteF/gitflow,dhilgarth/gitflow