Adding some vim tweaking

vim/vimrc

@@ -19,7 +19,7 @@ Plugin 'jnurmine/Zenburn'
 Plugin 'altercation/vim-colors-solarized'
 Plugin 'kien/ctrlp.vim'
 Plugin 'tpope/vim-fugitive'
-
+Plugin 'itchyny/lightline.vim'
 " add all your plugins here (note older versions of Vundle
 " used Bundle instead of Plugin)
 
@@ -97,3 +97,18 @@ call togglebg#map("<F5>")
 
 " Line numbers
 set nu
+
+" Needed for lightline
+set laststatus=2
+
+" Draw a margin in the 81th column
+set colorcolumn=81 
+
+" Use vim settings rather than vi settings
+set nocompatible
+
+" Persistent undo
+set undodir=~/.vimundo
+set undofile
+
+