[meta] make ~/Library/Colors, fix chruby ansible installation

ansible/roles/osx/tasks/main.yml

@@ -17,6 +17,7 @@
     dest: ~/Library/KeyBindings/DefaultKeyBinding.dict
     state: link
 
+- file: path=~/Library/Colors state=directory
 - name: symlink OS X colors palettes
   file: src={{ item }} dest=~/Library/Colors/{{ item | basename }} state=link
   with_fileglob: ~/.dotfiles/osx/Colors/*

ansible/roles/ruby/tasks/main.yml

@@ -1,6 +1,7 @@
 - name: install chruby
-  homebrew: name={{ item }} state=present
-  with_items:
+  homebrew:
+    state=present
+    name:
     - chruby
     - ruby-install