Switch vim colorscheme to gruvbox (#23)

.config/nvim/colors/zmrok.vim

@@ -0,0 +1,59 @@
+" Maintainer: Krzysztof Goj <Krzysztof-dot-Goj-at-gmail-dot-com>
+" Last Change: 27th March 2009
+
+set background=dark
+hi clear
+if exists("syntax_on")
+    syntax reset
+endif
+
+let g:colors_name="zmrok"
+
+" general colors
+hi Normal         guifg=#F8F8F8    guibg=#141414
+hi Cursor         guifg=Black      guibg=Green    gui=none
+hi LineNr         guifg=#777777    guibg=Black
+hi NonText 		  guifg=#808080    guibg=#202020
+
+hi StatusLine 	guifg=#F8F8F8 guibg=#202020 gui=bold
+hi StatusLineNC guifg=#777777 guibg=#202020 gui=none
+hi VertSplit 	guifg=#202020 guibg=#202020 gui=none
+
+" Vim >= 7.0 specific colors
+if version >= 700
+    hi CursorLine     guibg=#0d0d0d
+    hi CursorColumn   guibg=#0d0d0d
+    hi MatchParen     guifg=Black      guibg=#FFCC20 gui=bold
+
+    hi Pmenu          guifg=#141414    guibg=#CDA869
+    hi PmenuSel       guifg=#F8F8F8    guibg=#9B703F
+    hi PmenuSbar                       guibg=#DAEFA3
+    hi PmenuThumb     guifg=#8F9D6A
+endif
+
+"Syntax hilighting
+
+hi Comment        guifg=#888888
+hi Error          guifg=red        guibg=#141414
+hi Todo           guifg=red        guibg=#141414      gui=bold
+
+hi Constant       guifg=#CF593C
+hi Exception      guifg=#CF593C
+hi Operator       guifg=#DFCC77
+
+hi Special        guifg=orange
+hi SpecialChar    guifg=orange
+hi String         guifg=#D9FF77
+hi Character      guifg=#FFCE43
+hi Number         guifg=#FACE43
+
+hi Statement      guifg=#A56A30    gui=bold
+hi Keyword        guifg=#A56A30    gui=bold
+hi Label          guifg=#A56A30    gui=bold
+
+hi Identifier     guifg=#C7CA87     gui=none
+hi Type           guifg=#C7CA87     gui=none
+hi Function       guifg=#C7CA87     gui=none
+hi StorageClass   guifg=#C7CA87     gui=none
+
+hi PreProc        guifg=khaki4