Switch vim colorscheme to gruvbox (#23)

.config/nvim/colors/LightDefault.vim

@@ -0,0 +1,21 @@
+" LIGHT colorscheme.  The purpose of this colorscheme is to make small
+" adjustments to the default.
+
+" Restore default colors
+hi clear
+set background=light 
+
+
+if exists("syntax_on")
+  syntax reset
+endif
+
+let g:colors_name = "LightDefault"
+
+"hi Normal guifg=black guibg=#D6D3CE
+hi Normal guifg=black guibg=ivory3
+hi NonText guibg=#BDBDB1  " slightly darker than ivory3
+hi Constant guifg=Magenta3
+hi WarningMsg gui=bold
+hi Search guibg=Yellow2
+hi Function guifg=IndianRed