Switch vim colorscheme to gruvbox (#23)

.config/nvim/colors/sole.vim

@@ -0,0 +1,28 @@
+" See http://vimdoc.sourceforge.net/htmldoc/syntax.html for documentation on
+" the following esoteric values.
+" A list of colours is at the end of http://www.devdaily.com/linux/vi-vim-editor-color-scheme-syntax
+
+highlight clear
+
+set background=light
+
+if exists("syntax_on")
+	syntax reset
+endif
+
+let g:colors_name = "sole"
+
+hi Comment		cterm=bold			gui=italic			ctermfg=Magenta		ctermbg=White		guifg=Magenta	guibg=White
+hi Constant		cterm=bold			gui=bold			ctermfg=DarkGreen	guifg=DarkGreen
+hi Cursor							gui=reverse			ctermfg=Blue		guifg=Blue
+hi Identifier	cterm=bold			gui=bold			ctermfg=DarkMagenta	ctermbg=White		guifg=DarkMagenta
+hi LineNr		cterm=reverse		gui=reverse			ctermfg=DarkGray	guifg=#333333		guibg=#efefef
+hi NonText		ctermfg=DarkGray	gui=bold			guifg=DarkGray
+hi Normal		ctermbg=LightGray	ctermfg=Black		guibg=LightGray		guifg=Black
+hi Search												ctermbg=Yellow		guibg=Yellow
+hi Statement	cterm=bold			gui=bold			ctermfg=DarkBlue	guifg=DarkBlue
+hi StatusLine	cterm=reverse		gui=bold			ctermfg=Black		guifg=#000000		guibg=#ffffbb
+hi StatusLineNC cterm=NONE			gui=NONE			ctermfg=DarkGray	guifg=#333333		guibg=#aaaaaa
+hi Todo			cterm=italic		gui=italic 			ctermfg=White		ctermbg=DarkBlue	guifg=DarkBlue guibg=White
+hi Visual		cterm=NONE			gui=NONE			ctermfg=black		ctermbg=LightCyan	guibg=LightMagenta
+