Change vim status plugin from lightline to airline

Neonwave has an airline plugin. Lightline's powerline-like theme is
better, but the airline one is passable.

The 'surarken' airline theme will activate whenever neonwave is set as
the colour scheme.

vim/plugins.vim

@@ -28,14 +28,15 @@ Plug 'vim-pandoc/vim-pandoc-syntax'
 " }}}
 
 " Visual {{{
+Plug 'Sclarki/airline-surarken'
+Plug 'Sclarki/neonwave.vim'
 Plug 'altercation/vim-colors-solarized'
-Plug 'itchyny/lightline.vim'
+Plug 'bling/vim-airline'
+Plug 'junegunn/goyo.vim'
+Plug 'junegunn/limelight.vim'
 Plug 'kshenoy/vim-signature'
 Plug 'nathanaelkane/vim-indent-guides'
 Plug 'romainl/flattened'
-Plug 'Sclarki/neonwave.vim'
-Plug 'junegunn/goyo.vim'
-Plug 'junegunn/limelight.vim'
 " }}}
 
 " Text Objects {{{

vim/settings/cursorposition.vim

@@ -12,4 +12,3 @@ if has("autocmd")
   au FileType gitcommit au! BufEnter COMMIT_EDITMSG call setpos('.', [0, 1, 1, 0])
 
 endif
-" }}}

vim/settings/statusline.vim

@@ -1,4 +1,14 @@
-""""""""" Powerline
 set laststatus=2
+set noshowmode " don't show e.g. --INSERT-- with fancy status lines.
+
+" Powerline
 "set rtp+=~/dotfiles/powerline/powerline/powerline/bindings/vim
-set noshowmode " don't show e.g. --INSERT-- since we're using powerline
+
+let g:airline_powerline_fonts = 1
+let g:airline_left_sep=''
+let g:airline_right_sep=''
+
+let g:airline_theme = 'powerlineish'
+if g:colors_name == 'neonwave'
+  let g:airline_theme = 'surarken'
+endif