Add vim-elixir

Signed-off-by: chatgris <jboyer@af83.com>
Remove default format from .rspec

Signed-off-by: chatgris <jboyer@af83.com>
Vim spell

Signed-off-by: chatgris <jboyer@af83.com>
Add vim-slim

Signed-off-by: chatgris <jboyer@af83.com>