adding vim plugins

vim/.vimrc

@@ -11,7 +11,8 @@ set expandtab
 
 so ~/.vim/plugins.vim
 
-map <C-n> :NERDTreeToggle<CR>
+let mapleader = "," " map leader to comma
+
 set laststatus=2
 set noshowmode
 set showmatch
@@ -51,13 +52,29 @@ inoremap { {}<left>
 inoremap {<CR> {<CR>}<ESC>O
 inoremap {;<CR> {<CR>};<ESC>O
 
+nnoremap <leader>n :NERDTreeFocus<CR>
+nnoremap <C-n> :NERDTree<CR>
+nnoremap <C-t> :NERDTreeToggle<CR>
+nnoremap <C-f> :NERDTreeFind<CR>
+
 set number
 syntax on
 
 let g:NERDTreeDirArrowExpandable = '▸'
 let g:NERDTreeDirArrowCollapsible = '▾'
 
+" Start NERDTree when Vim is started without file arguments.
 autocmd StdinReadPre * let s:std_in=1
 autocmd VimEnter * if argc() == 0 && !exists("s:std_in") | NERDTree | endif
 
+" Exit Vim if NERDTree is the only window remaining in the only tab.
 autocmd bufenter * if (winnr("$") == 1 && exists("b:NERDTree") && b:NERDTree.isTabTree()) | q | endif
+
+set statusline+=%#warningmsg#
+set statusline+=%{SyntasticStatuslineFlag()}
+set statusline+=%*
+
+let g:syntastic_always_populate_loc_list = 1
+let g:syntastic_auto_loc_list = 1
+let g:syntastic_check_on_open = 1
+let g:syntastic_check_on_wq = 0

vim/plugins.vim

@@ -5,6 +5,8 @@ call vundle#begin()
 Plugin 'scrooloose/nerdtree'
 Plugin 'itchyny/lightline.vim'
 Plugin 'airblade/vim-gitgutter'
+Plugin 'tpope/vim-fugitive'
+Plugin 'scrooloose/syntastic'
 
 call vundle#end()