vimrc: Fix clang-format for C++ files.

Change-Id: I04a5e6e35bb7db690bda3059192039157c4b88a8
Signed-off-by: Daniel Thompson <daniel@redfelineninja.org.uk>
vimrc: Tab closure like Firefox (C-W)

Change-Id: Ieb4096aa4d5959c596d89befe2688ee930f35403
Signed-off-by: Daniel Thompson <daniel@redfelineninja.org.uk>
vimrc: Switch wiki to markdown syntax.

Change-Id: Ieccce6f37728cbb8c8f95e7a56e5ccb6c50dd765
Signed-off-by: Daniel Thompson <daniel@redfelineninja.org.uk>