Fixing reloading issue.

- closes https://github.com/gmarik/vundle/issues/#issue/2
- thanks http://github.com/dag for reporting

autoload/vundle/installer.vim

@@ -1,6 +1,5 @@
 func! vundle#installer#install(bang)
-  " TODO: obtain Bundles without sourcing .vimrc
-  silent source ~/.vimrc 
+  call s:reload_bundles()
   if !isdirectory(g:bundle_dir) | call mkdir(g:bundle_dir, 'p') | endif
   for bundle in g:bundles | call s:install('!' == a:bang, bundle) | endfor
 endf
@@ -11,6 +10,12 @@ func! vundle#installer#helptags()
   call s:log('Done. '.c.' bundles processed')
 endf
 
+func! s:reload_bundles()
+  " TODO: obtain Bundles without sourcing .vimrc
+  silent source $MYVIMRC
+  if !filereadable($MYGVIMRC)| silent source $MYGVIMRC | endif
+endf
+
 func! s:helptags(rtp)
   if !(isdirectory(a:rtp.'/doc') && (!filereadable(a:rtp.'/doc/tags') || filewritable(a:rtp.'/doc/tags')))
     return 0