Add Package.swift and move files around

Sources/Template.swift

@@ -0,0 +1,40 @@
+import Foundation
+import PathKit
+
+/// A class representing a template
+public class Template {
+  let tokens: [Token]
+
+  /// Create a template with the given name inside the given bundle
+  public convenience init(named:String, inBundle bundle:NSBundle? = nil) throws {
+    let useBundle = bundle ??  NSBundle.mainBundle()
+    guard let url = useBundle.URLForResource(named, withExtension: nil) else {
+      throw NSError(domain: NSCocoaErrorDomain, code: NSFileNoSuchFileError, userInfo: nil)
+    }
+
+    try self.init(URL:url)
+  }
+
+  /// Create a template with a file found at the given URL
+  public convenience init(URL:NSURL) throws {
+    try self.init(path: Path(URL.path!))
+  }
+
+  /// Create a template with a file found at the given path
+  public convenience init(path:Path) throws {
+    self.init(templateString: try path.read())
+  }
+
+  /// Create a template with a template string
+  public init(templateString:String) {
+    let lexer = Lexer(templateString: templateString)
+    tokens = lexer.tokenize()
+  }
+
+  /// Render the given template
+  public func render(context: Context? = nil, namespace: Namespace? = nil) throws -> String {
+    let parser = TokenParser(tokens: tokens, namespace: namespace ?? Namespace())
+    let nodes = try parser.parse()
+    return try renderNodes(nodes, context ?? Context())
+  }
+}