Summary of commit:

* modified.el:
  - Add defalias to shorten yes/no to y/n prompt answers
* keybindings.el:
  - Add C-x k to close window without prompt
  - Bug fix for create new file on a new window (should be M-n)
* hooks.el:
  - Bug fixes for wrong lambda function syntax
* pkg-auto-complete:
  - Replace auto-complete with auto-complete-config
  - Add ac-config-default
* packages.el:
  - Add pkg-bash-completion
* packages/:
  - Add pkg-bash-completion.el for bash-completion.el