THRIFT-3773: Swift 3 changes, Squashed (#1084)

Client: swift
diff --git a/lib/swift/Sources/Thrift.swift b/lib/swift/Sources/Thrift.swift
new file mode 100644
index 0000000..afa3096
--- /dev/null
+++ b/lib/swift/Sources/Thrift.swift
@@ -0,0 +1,3 @@
+class Thrift {
+	let version = "0.0.1"
+}