fix wrong quoted library search path

If CocoaPods have some library search paths,

Before, library search path was generated as below.
	-L "./vendor/Pods/CardIO/CardIO -L "./vendor/Pods/GoogleAnalytics-iOS-SDK"

It should be generated with
	-L "./vendor/Pods/CardIO/CardIO" -L "./vendor/Pods/GoogleAnalytics-iOS-SDK"