Add images for up and back navigation
Additional image for navigation back and up
Add image for action bar action items
add image for cab
Add image for multipane layout
Add multipane layout technique image
Add image for examples of confirming and acknowledgement
add flowchart to determine when to use acknowledgement or confirmation
Add examples of ack and confirming
Add images for notification and drawable principles
Add notification pattern image
Add failing pattern of notification
Add metrics diagram