Switch vim colorscheme to gruvbox (#23)

.config/nvim/colors/buttercream.vim

@@ -0,0 +1,59 @@
+" Vim color file
+" vim: tw=0 ts=8 sw=4
+" Scriptname:	buttercream
+" Maintainer:	H<>kan Wikstr<74>m <hakan@prinsig.se>
+" Version:	1.1
+" Last Change:	20060413
+" As of now only gui is supported
+" Based on the theme fog theme by Thomas R. Kimpton <tomk@emcity.net>
+
+set background=light
+hi clear
+if exists("syntax_on")
+  syntax reset
+endif
+let colors_name = "buttercream"
+
+"  Highlight		Foreground		Background			Extras
+
+hi Normal		guifg=#213a58		guibg=#ffffde
+hi NonText		guifg=LightBlue		guibg=#eee9bf			gui=bold
+hi Comment		guifg=#2f8e99
+hi Constant		guifg=#7070a0
+hi Statement		guifg=DarkGreen						gui=bold
+hi identifier		guifg=DarkGreen
+hi preproc		guifg=#408040
+hi type			guifg=DarkBlue
+hi label		guifg=#c06000
+hi operator		guifg=DarkGreen						gui=bold
+hi StorageClass		guifg=#a02060						gui=bold
+hi Number		guifg=Blue
+hi Special		guifg=#aa8822
+hi Cursor		guifg=LightGrey		guibg=#880088
+hi lCursor		guifg=Black		guibg=Cyan
+hi ErrorMsg		guifg=White		guibg=DarkRed
+hi DiffText					guibg=DarkRed			gui=bold
+hi Directory		guifg=DarkGrey						gui=underline
+hi LineNr		guifg=#ccaa22
+hi MoreMsg		guifg=SeaGreen						gui=bold
+hi Question		guifg=DarkGreen						gui=bold
+hi Search		guifg=Black		guibg=#887722
+hi SpecialKey		guifg=Blue
+hi SpecialChar		guifg=DarkGrey						gui=bold
+hi Title		guifg=DarkMagenta					gui=underline
+hi WarningMsg		guifg=DarkBlue		guibg=#9999cc
+hi WildMenu		guifg=Black		guibg=Yellow			gui=underline
+hi Folded		guifg=DarkBlue		guibg=LightGrey
+hi FoldColumn		guifg=DarkBLue		guibg=Grey
+hi DiffAdd					guibg=DarkBlue
+hi DiffChange					guibg=DarkMagenta
+hi DiffDelete		guifg=Blue		guibg=DarkCyan			gui=bold
+hi Ignore		guifg=grey90
+hi IncSearch									gui=reverse
+hi ModeMsg									gui=bold
+hi StatusLine									gui=reverse,bold
+hi StatusLineNC									gui=reverse
+hi VertSplit									gui=reverse
+hi Visual		guifg=LightGrey						gui=reverse
+hi VisualNOS									gui=underline,bold
+hi Todo						guibg=#ccaa22			gui=bold,underline