Updated Build Phase Section for Xcode 5

The old method doesn't work for Xcode 5, you must use the Editor menu to add the Build Phase.
Edits

Edits
Updated Build Phase Bug Note for Xcode 5

Build Phases can't be added if the focus isn't on the Build Phase tab and it's whitespace.
Revert "Updated Build Phase Bug Note for Xcode 5"

This reverts commit 89bd17aa9b13eedf99a4f3f91b3850cccd4da121.
Added Xcode 5 Bug Hint for Grayed Out Menus

Grayed out menus happen with loss of focus for the current Build Phase.
Must click on whitespace in Build Phase tab to regain focus to add a
Build Phase.
Added more details on creating aggregate target

Includes all the steps to find the Aggregate Target
Reworded Xcode 5 Bug Fix
Updated Instructions for Build Phase Script for Xcode 5/4

Separated instructions for Xcode 5 and 4.
Updates to the Resource Bundle Target

Added clarification on some of the changes or where to find something.
Added a note about Xcode 5 and the Asset Catalog bug with
pathForResource.
Updated the dependent Project Section

Xcode only supports one project being open. The Dependent Project needs
to be closed before the Target Dependencies can be added.
Retina Image Bug with OS X Resource Bundle

Added a new step for creating a bundle resource. Without it there is a
critical bug for any retina images.

The COMBINE_HIDPI_IMAGES Build Setting must be removed from the
Resource Bundle. It causes .png and @2x.png images to merge into a
single .tiff file.

The pathForResource method will fail when you look for the standard
.png or @2x.png files because they won't exist.

Added an image to show the setting. Path might need to be updated on
Master.
Merge pull request #62 from PaulSolt/iOS-7

Updated for Xcode 5 and iOS 7.0
Use correct header path when archiving.