Script to fix Xcode 6.x so that it will run on El Capitan

fixXcode6OnElCapitan.sh

#!/bin/bash

## Copyright (C) 2015 Cerebral Gardens http://www.cerebralgardens.com/
##
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## permit persons to whom the Software is furnished to do so, subject to the following
## conditions:
##
## The above copyright notice and this permission notice shall be included in all copies
## or substantial portions of the Software.
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## INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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if [ $# -lt 1 ] ; then
	echo "Usage: ${0} path/to/xcode.app"
	exit
fi

XCODEAPP=${1}

if [ ! -e "${XCODEAPP}/Contents/MacOS/Xcode" ] ; then
	echo "Error: ${XCODEAPP} does not look like a path to Xcode.app"
	exit
fi

if [ ! -w "${XCODEAPP}/Contents/_CodeSignature/CodeResources" ] || [ ! -w "${XCODEAPP}/Contents/Info.plist" ] ; then
	echo "Error: Permission denied, try running with sudo"
	exit
fi

echo ""
echo "Please note: Apple may reject apps built with Xcode 6.x on El Capitan,"
echo "so even though this lets you run Xcode 6.x, make sure you use Yosemite"
echo "for your final App Store build. There are also reports that Xcode 6"
echo "may make corrupt builds on El Capitan, so your milage may vary."
echo ""
echo "Processing...This can take a few minutes to complete..."
echo ""

/usr/libexec/PlistBuddy -c "Set :CFBundleVersion 8000" "${XCODEAPP}/Contents/Info.plist"
codesign -f -s - "${XCODEAPP}/Contents/MacOS/Xcode"

echo ""
echo "Looks like you should be good to go now."
echo "Why don't you also check out my app Watchdog For Xcode. It monitors Xcode"
echo "and solves all your DerivedData issues: http://bit.ly/WatchdogForXcode"
echo "Also, if you're developing with Swift, check out my debug log library"
echo "XCGLogger: https://github.com/DaveWoodCom/XCGLogger"
echo ""

Just happened to land on this page and read your echo above for Watchdog. Two days ago a wasted about an hour on a stale DerivedData problem...so glad I found your app...just purchased!

Thanks!

After running the script get this Usage: fixXcode6OnElCapitan.sh path/to/xcode.app but still not able to run xcode 6.4.

Do I put this file inside the contents of that Xcode on my computer. Since I have renamed it away from plain Xcode.app? then just run sudo fixxcode6onelcapitan.sh from the terminal in that folder?