Create lexer and template

Stencil/Template.swift

@@ -0,0 +1,24 @@
+//
+//  Template.swift
+//  Stencil
+//
+//  Created by Kyle Fuller on 23/10/2014.
+//  Copyright (c) 2014 Cocode. All rights reserved.
+//
+
+import Foundation
+
+public struct Template {
+    let nodes:[Node]
+
+    public init(templateString:String) {
+        let lexer = Lexer(templateString: templateString)
+        let tokens = lexer.tokenize()
+        let parser = TokenParser(tokens: tokens)
+        nodes = parser.parse()
+    }
+
+    public func render(context:Context) -> (String?, Error?) {
+        return renderNodes(nodes, context)
+    }
+}