- add pathogen.vim (https://github.com/tpope/vim-pathogen)

- add vim-airline (https://github.com/vim-airline/vim-airline)

.vim/bundle/vim-airline/t/extensions_default.vim

@@ -0,0 +1,31 @@
+let g:airline#extensions#default#layout = [
+      \ [ 'c', 'a', 'b', 'warning' ],
+      \ [ 'x', 'z', 'y' ]
+      \ ]
+
+source plugin/airline.vim
+doautocmd VimEnter
+
+describe 'default'
+  before
+    let s:builder = airline#builder#new({'active': 1})
+  end
+
+  it 'should use the layout'
+    call airline#extensions#default#apply(s:builder, { 'winnr': 1, 'active': 1 })
+    let stl = s:builder.build()
+    Expect stl =~ 'airline_c_to_airline_a'
+    Expect stl =~ 'airline_a_to_airline_b'
+    Expect stl =~ 'airline_b_to_airline_warning'
+    Expect stl =~ 'airline_x_to_airline_z'
+    Expect stl =~ 'airline_z_to_airline_y'
+  end
+
+  it 'should only render warning section in active splits'
+    wincmd s
+    Expect airline#statusline(1) =~ 'warning'
+    Expect airline#statusline(2) !~ 'warning'
+    wincmd c
+  end
+end
+