Update README to fix custom attach hook (#650)
Update README to fix custom attach hook (#650)

Commit 0fb1a8d0537bce3249edb39678163c78eb6cdc20 adds documentation for custom attach to tmux session using new hook functionality, but referencing the on_project_start hook instead of on_project_exit. The on_project_exit is the right hook to use, as is the proper replacement for the post configuration now deprecated.
tmuxinator/tmuxinator,ethagnawl/tmuxinator,ethagnawl/tmuxinator,tmuxinator/tmuxinator,tmuxinator/tmuxinator,J3RN/tmuxinator,J3RN/tmuxinator,ethagnawl/tmuxinator,J3RN/tmuxinator