some prezto twaeks, add {goyo,limelight}.vim to the nvim plugins

nvimrc

@@ -21,6 +21,8 @@ Plug 'Raimondi/delimitMate'
 Plug 'SirVer/ultisnips'
 Plug 'rizzatti/dash.vim'
 Plug 'octol/vim-cpp-enhanced-highlight'
+Plug 'junegunn/goyo.vim'
+Plug 'junegunn/limelight.vim'
 " Plug 'gilligan/vim-lldb'
 Plug 'atelierbram/vim-colors_atelier-schemes'
 Plug 'baeuml/summerfruit256.vim'
@@ -149,3 +151,5 @@ set noequalalways
 " list whitespaces and some other characters
 set listchars=tab:>-,trail:~
 set list
+
+let g:tex_flavour="latex"

zpreztorc

@@ -20,7 +20,8 @@ zstyle ':prezto:load' pmodule \
   'completion' \
   'prompt' \
   'git' \
-  'syntax-highlighting'
+  'syntax-highlighting' \
+  'history-substring-search'
 
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 # Editor