Added new vim colorscheme, updated prompt

Added smyck colorscheme, which I foud on reddit today.
Also, copied the prompt from zholman's dotfiles

vim/vimrc.symlink

@@ -112,7 +112,7 @@ set tm=500
 syntax on
 
 set background=dark
-colorscheme jellybeans
+"colorscheme jellybeans
 "colorscheme xorium
 "colorscheme molokai
 "colorscheme ir_black
@@ -121,6 +121,7 @@ colorscheme jellybeans
 "colorscheme vividchalk
 "colorscheme desert
 "colorscheme solarized
+colorscheme smyck
 
 set number " show line numbers
 
@@ -175,6 +176,8 @@ nnoremap K :q<cr>
 " remove extra whitespace
 nmap <leader><space> :%s/\s\+$<cr>
 
+nmap <leader>, :w<cr>
+
 " set paste toggle
 set pastetoggle=<F6>