Update ctrlp, Fix vim-plug install order

When a plugin changes fork but not name, updating before cleaning throws
an error, since the old plugin is still checked out. We reverse this so
that unwanted plugins are removed to make way for wanted ones.

setup.sh

@@ -26,7 +26,7 @@ linkup() {
 # Run vim-plug's install process.
 # Vim starts with just a registry of plugins and the `nocompatible` flag.
 install_vim_plugins() {
-  vim -u ~/dotfiles/vim/plugins.vim -N +PlugUpdate! +PlugClean! +qall!
+  vim -u ~/dotfiles/vim/plugins.vim -N +PlugClean! +PlugUpdate! +qall!
 }
 
 # }}}

vim/plugins.vim

@@ -52,7 +52,7 @@ Plug 'vim-scripts/argtextobj.vim'
 " }}}
 
 " File Browser {{{
-Plug 'kien/ctrlp.vim'
+Plug 'ctrlpvim/ctrlp.vim'
 Plug 'tpope/vim-vinegar'
 " }}}