title: Xcode hook up with Unity
body: <p>Hi i am new bee in Unity but i have 1 year experience in Xcode, I am doing an app in Unity for iPhone but getting bit confuse on how can i hook-up Xcode with Unity, I want to Facebook sharing, Twitter Sharing and also iOS native Email sharing(Using Mail Composer) in Unity but i don't get any help ful solution to do task in Unity, I only get Plugins which i need to Purchase first. So i want to do this task in Xcode it reduce and time and money and rest of work on Unity so is this possible that we can Communicate between Xcode and Unity? If Possible then kindly share some knowledge and links with me so that i can do this task ASAP.
  Thanks in Advance.</p>