This is a paid asset, but now you can download IOS Deploy for FREE, Please keep in mind this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
For more detail this asset from the Unity Asset Store: Click Here
IOS Deploy v2.1
“If possible, please buy the package to support the developer”
This plugin allows you add additional params to the Xcode project on unity building phase.
Unity5 ready!
Online Documentation | Forum Thread
Plugins Supports:
* Frameworks
* Libraries
* Compiler Flags
* Linker Flags
* Plist Values
For example if you have IOS plugin with requires some flags or frameworks to be added in compiled IOS project, or you did your own plugin for your game, no need to add it manually every time. IOS Deploy plugin will do this for you on Unity building phase.