unable to create a ros package in pr2_controller tutorial

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I am following the tutorial, Using the low-level robot base controllers to drive the robot. I got a pr2 in gazebo and rosran the pr2 controller manager. When I try to roscreate-pkg drive_base_tutorial roscpp geometry_msgs this is what the terminal looks like: !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! WARNING: current working directory is not on ROS_PACKAGE_PATH! Please update your ROS_PACKAGE_PATH environment variable. !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Created package directory /home/roger/catkin_ws/src/drive_base_tutorial Created include directory /home/roger/catkin_ws/src/drive_base_tutorial/include/drive_base_tutorial Created cpp source directory /home/roger/catkin_ws/src/drive_base_tutorial/src Created package file /home/roger/catkin_ws/src/drive_base_tutorial/Makefile Created package file /home/roger/catkin_ws/src/drive_base_tutorial/manifest.xml Created package file /home/roger/catkin_ws/src/drive_base_tutorial/CMakeLists.txt Created package file /home/roger/catkin_ws/src/drive_base_tutorial/mainpage.dox

Please edit drive_base_tutorial/manifest.xml and mainpage.dox to finish creating your package

I am using 12.04 ubuntu and groovy. export declare -x ROSLISP_PACKAGE_DIRECTORIES="" declare -x ROS_DISTRO="groovy" declare -x ROS_ETC_DIR="/opt/ros/groovy/etc/ros" declare -x ROS_PACKAGE_PATH="/opt/ros/groovy/share:/opt/ros/groovy/stacks" declare -x ROS_ROOT="/opt/ros/groovy/share/ros"

and cd is in catkin_ws/src.

Please help. I do not know how to proceed