Add my LCA2016 presentation.

Add my LCA2016 presentation.
- run edlib as "./edlib -g"
- open lca2016/edlib.md (C-x C-f)
- go to the buffer list (C-x b)
- nagivate to the edlib.md entry
- type 'p' to view in presentation mode

Alternate to last step:

- type C-x 5 2 to get new window (will be blank)
- type C-x b in that window to get buffer list
- move it to other monitor
- type M-f to go full screen
- in original window us C-v or page-down to page down both displays
- use C-l anywhere to re-centre the other display

Signed-off-by: NeilBrown <neil@brown.name>