Gift deprecated in favor of SwiftGit2

Author: lucasderraugh

README.md

@@ -236,7 +236,7 @@ Here are the bindings to libgit2 that are currently available:
 * Rust
     * git2-rs <https://github.com/alexcrichton/git2-rs>
 * Swift
-    * Gift <https://github.com/modocache/Gift>
+    * SwiftGit2 <https://github.com/SwiftGit2/SwiftGit2>
 * Vala
     * libgit2.vapi <https://github.com/apmasell/vapis/blob/master/libgit2.vapi>