Add flx-ido to the list of default packages
flx-ido does not exist but flx does

I had to change flx-ido to flx to avoid the following:

error: Package `flx-ido' is not available for installation
Merge pull request #357 from localredhead/master

flx-ido does not exist but flx does
Fix a typo
Refactor the window switching advice code
Add a few keybindings making use of the Super key
Remove a problematic keybinding
Revert "flx-ido does not exist but flx does"

This reverts commit 6821b1d79b13201fd467990016b92e09fa4f7ddf.
Update keybindings a bit
Clean up package installation code
Add a few more tips
Fix command name
Cleanup comment annotation highlighting a bit
Rename prelude-add-comment-annotations to prelude-font-lock-comment-annotations
Add commands to increment and decrement an integer at point
Add command to make Emacs window fullscreen.

Default keybinding is F11. The command follows freedesktop standards,
so it should work on most desktops, at least in GNU/Linux systems.
Restrict fullscreen feature to X-based systems.

Recent Emacs in OSX already comes with fullscreen support.
Merge pull request #359 from haplo/fullscreen

Add command to make Emacs window fullscreen
Refine fullscreen support
More tips