Switch vim colorscheme to gruvbox (#23)

.config/nvim/colors/ron.vim

@@ -0,0 +1,43 @@
+" local syntax file - set colors on a per-machine basis:
+" vim: tw=0 ts=4 sw=4
+" Vim color file
+" Maintainer:	Ron Aaron <ron@mossbayeng.com>
+" Last Change:	2001 Jul 28
+
+set background=dark
+hi clear
+if exists("syntax_on")
+  syntax reset
+endif
+let g:colors_name = "ron"
+hi Normal		guifg=cyan	guibg=black
+hi NonText		guifg=brown
+hi comment		guifg=green
+hi constant		guifg=cyan	gui=bold
+hi identifier	guifg=cyan	gui=NONE
+hi statement	guifg=lightblue	gui=NONE
+hi preproc		guifg=Pink2
+hi type			guifg=seagreen	gui=bold
+hi special		guifg=yellow
+hi ErrorMsg		guifg=Black	guibg=Red
+hi WarningMsg	guifg=Black	guibg=Green
+hi Error		guibg=Red
+hi Todo			guifg=Black	guibg=orange
+hi Cursor		guibg=#60a060 guifg=#00ff00
+hi Search		guibg=lightslateblue
+hi IncSearch	gui=NONE guibg=steelblue
+hi LineNr		guifg=darkgrey
+hi title		guifg=darkgrey
+hi StatusLineNC	gui=NONE guifg=lightblue guibg=darkblue
+hi StatusLine	gui=bold	guifg=cyan	guibg=blue
+hi label		guifg=gold2
+hi operator		guifg=orange
+hi clear Visual
+hi Visual		term=reverse cterm=reverse gui=reverse
+hi DiffChange   guibg=darkgreen
+hi DiffText		guibg=olivedrab
+hi DiffAdd		guibg=slateblue
+hi DiffDelete   guibg=coral
+hi Folded		guibg=gray30
+hi FoldColumn	guibg=gray30 guifg=white
+hi cIf0			guifg=gray