[vim] replace gruvbox colorscheme with badwolf

.gitmodules

@@ -31,6 +31,7 @@
 [submodule "vim/start/YouCompleteMe"]
 	path = vim/start/YouCompleteMe
 	url = https://github.com/ycm-core/YouCompleteMe.git
+	ignore = dirty
 [submodule "vim/start/vim-surround"]
 	path = vim/start/vim-surround
 	url = https://github.com/tpope/vim-surround.git
@@ -55,3 +56,9 @@
 [submodule "vim/start/nerdtree"]
 	path = vim/start/nerdtree
 	url = https://github.com/scrooloose/nerdtree.git
+[submodule "vim/start/badwolf"]
+	path = vim/start/badwolf
+	url = https://github.com/sjl/badwolf.git
+[submodule "vim/start/vim-airline-themes"]
+	path = vim/start/vim-airline-themes
+	url = https://github.com/vim-airline/vim-airline-themes.git

vim/start/badwolf

@@ -0,0 +1 @@
+Subproject commit 125c16dcfd405667b3be75bd0b22739ebeb4567c

vim/start/vim-airline-themes

@@ -0,0 +1 @@
+Subproject commit e6f233231b232b6027cde6aebeeb18d9138e5324

vim/vimrc

@@ -94,9 +94,10 @@ augroup CursorLine
   au WinLeave * setlocal nocursorline
 augroup END
 
-set bg=dark    " Setting dark mode 
+" Make the gutters darker than the background.
-let g:gruvbox_contrast_dark = 'hard'
+let g:badwolf_darkgutter = 1
-colorscheme gruvbox
+let g:badwolf_tabline = 0
+colorscheme badwolf
 
 "
 " Formatting
@@ -210,7 +211,7 @@ autocmd BufRead,BufNewFile *.md set filetype=markdown
 " vim-airline
 set timeout timeoutlen=1000 ttimeoutlen=50
 let g:airline_powerline_fonts = 1
-let g:airline_theme = 'gruvbox'
+let g:airline_theme = 'badwolf'
 let g:airline#extensions#tabline#enabled = 1
 
 " JSON.vim http://www.vim.org/scripts/script.php?script_id=1945