tf2 stamped datatypes tutorial fails to build

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I'm trying to walk through the tf2 tutorials following the instructions here: http://wiki.ros.org/tf2/Tutorials/Usi...

Trying to build the source code with catkin results in

fatal error: tf2/transform_listener.h: No such file or directory.

Upon changing the two include files to
#include "tf2_ros/transform_listener.h" #include "tf2_ros/message_filter.h"

The code can find the header files but now the tf2 member functions are throwing errors. Changing things to tf2_ros:: fixes some errors but others arise. This results in a few questions on my end

1. What is the difference between tf2 and tf2_ros? Can people point me to documentation on this
2. Is syncing Stamped data to a specific transformation in time even done via message filters in tf2 or is this functionality replaced with tfBuffer?
3. Is there a tf2 tutorial that shows how to time sync transformations and stamped datatypes with the correct implementation?