Add support for Swift 3.0

Tests/StencilTests/XCTest.swift

@@ -0,0 +1,28 @@
+import XCTest
+
+
+public func stencilTests() {
+  testContext()
+  testFilter()
+  testLexer()
+  testToken()
+  testTokenParser()
+  testTemplateLoader()
+  testTemplate()
+  testVariable()
+  testNode()
+  testForNode()
+  testIfNode()
+  testNowNode()
+  testInclude()
+  testInheritence()
+  testStencil()
+
+}
+
+
+class StencilTests: XCTestCase {
+  func testRunStencilTests() {
+    stencilTests()
+  }
+}