Use rcm instead of ./install.sh

The rcm suite is designed to replace the `./install.sh` script found in
this and many other dotfiles repos across GitHub. By using rcm users can
combine multiple dotfiles repos, tag dotfiles, have host-specific
dotfiles, and other powerful features.

This commit removes `install.sh`, updates the README, adds a post-up
hook that vundles the vim bundles, and adds a `rcrc` configuration that
ignores `README.md` and `LICENSE` and sets the dotfiles directory to
just `dotfiles`.

README.md

@@ -8,6 +8,11 @@ Set zsh as your login shell.
 
     chsh -s /bin/zsh
 
+Install [rcm](https://github.com/mike-burns/rcm).
+
+    brew tap mike-burns/rcm
+    brew install rcm
+
 Install
 -------
 
@@ -20,12 +25,16 @@ updated](http://robots.thoughtbot.com/keeping-a-github-fork-updated)).
 
 Install:
 
-    cd dotfiles
-    ./install.sh
+    rcup -d dotfiles -x README.md -x LICENSE
 
-This will create symlinks for config files in your home directory.
+This will create symlinks for config files in your home directory. The
+`-x` options, which exclude the `README.md` and `LICENSE` files, are
+needed during installation but can be skipped once the `.rcrc`
+configuration file is symlinked in.
 
-You can safely run `./install.sh` multiple times to update.
+You can safely run `rcup` multiple times to update:
+
+    rcup
 
 Make your own customizations
 ----------------------------

hooks/post-up

@@ -0,0 +1,6 @@
+#!/bin/sh
+
+if [ ! -e $HOME/.vim/bundle/vundle ]; then
+  git clone https://github.com/gmarik/vundle.git $HOME/.vim/bundle/vundle
+  vim -u $HOME/.vimrc.bundles +BundleInstall +qa
+fi

install.sh

@@ -1,21 +0,0 @@
-#!/bin/sh
-
-for name in *; do
-  target="$HOME/.$name"
-  if [ -e "$target" ]; then
-    if [ ! -L "$target" ]; then
-      echo "WARNING: $target exists but is not a symlink."
-    fi
-  else
-    if [ "$name" != 'install.sh' ] && [ "$name" != 'README.md' ] && ["$name" != 'LICENSE' ]; then
-      echo "Creating $target"
-      ln -s "$PWD/$name" "$target"
-    fi
-  fi
-done
-
-if [ ! -e ~/.vim/bundle/vundle ]; then
-  git clone https://github.com/gmarik/vundle.git ~/.vim/bundle/vundle
-fi
-
-vim -u ~/.vimrc.bundles +BundleInstall +qa

rcrc

@@ -0,0 +1,2 @@
+EXCLUDES="README.md LICENSE"
+DOTFILES_DIRS="$HOME/dotfiles"