Update folding for vim

- <space> toggles folding
 - Change vim folding text

vimrc

@@ -18,6 +18,7 @@ set history=1000
 set autoread        " Set to auto read when a file is changed from the outside
 set autochdir       " Change current directory to be directory of current file
 set colorcolumn=80
+set foldmethod=syntax
 
 if $TMUX == ''
     set clipboard+=unnamed
@@ -46,6 +47,8 @@ map <leader>ct :TlistToggle<CR>     " taglist shortcut
 map <leader>ts :%s/\s\s*$//g<CR>    " trim trailing whitespace
 map <leader>cc :CoffeeCompile<CR>   " Complie CoffeeScript
 nnoremap <leader>rc :split $MYVIMRC<cr>
+" Use space to toggle folding
+nnoremap <space> za
 
 if bufwinnr(1)
     map <leader>+ <C-W><
@@ -67,7 +70,7 @@ let g:syntastic_css_checkers = []
 
 " Close all open buffers on entering a window if the only
 " buffer that's left is the NERDTree buffer
-function s:CloseIfOnlyNerdTreeLeft()
+function! s:CloseIfOnlyNerdTreeLeft()
     if exists("t:NERDTreeBufName")
         if bufwinnr(t:NERDTreeBufName) != -1
             if winnr("$") == 1
@@ -77,6 +80,14 @@ function s:CloseIfOnlyNerdTreeLeft()
     endif
 endfunction
 
+function! FoldText()
+    let nl = v:foldend - v:foldstart + 1
+    let linetext = getline(v:foldstart)
+    let txt = linetext . ' ' . nl . ' lines '
+    return txt
+endfunction
+set foldtext=FoldText()
+
 " Vim Tabs
 map <leader>tt :tabnew<cr>
 map <leader>te :tabedit