Remove M-O keybinding

It interfered with the Terminal's handling of arrow keys.

This fixes #343.
Map Option to Super and Fn to Hyper

More keybinding options is never a bad thing.
Add prefix arg to prelude-smart-open-line

With a prefix arg the command will invoke prelude-smart-open-line-above
Replace electric-indent-mode and paredit with smartparens
Ops :-)
Remove yasnippets from the list of default packages

Prelude provided just a basic config anyways. Anyone can still install
the package manually and enable it in his/her personal config.
Don't create the snippets dir
Fix some wrong keybindings
Merge pull request #349 from wzpan/readme

Fix some wrong keybindings
Merge remote-tracking branch 'refs/remotes/bbatsov/master'

* refs/remotes/bbatsov/master:
  Fix some wrong keybindings
  Don't create the snippets dir
  Remove yasnippets from the list of default packages
  Ops :-)
  Replace electric-indent-mode and paredit with smartparens
  Add prefix arg to prelude-smart-open-line
  Map Option to Super and Fn to Hyper
  Remove M-O keybinding
Remove paredit stuff from prelude-common-lisp.el

The paredit backspace override without having paredit-backward-delete-key defined by paredit was breaking slime loading. I commented this out rather than deleting it since I noticed you had just commented out other paredit stuff elsewhere
Merge pull request #351 from capdevc/patch-1

Remove paredit stuff from prelude-common-lisp.el
Remove melpa package from list of default packages
Minor cleanup
When copying the current line discard its newline (fixes #347)
Use helm-projectile directly (fixes #352)
Set sp-cancel-autoskip-on-backward-movement to nil
Add grizzl to the default list of packages
Add flx to list of default packages
Correct substatement indentation in c-mode (fixes #342)