Add Package.swift and move files around

Tests/ParserSpec.swift

@@ -0,0 +1,55 @@
+import Spectre
+import Stencil
+
+
+describe("TokenParser") {
+  $0.it("can parse a text token") {
+    let parser = TokenParser(tokens: [
+      Token.Text(value: "Hello World")
+    ], namespace: Namespace())
+
+    let nodes = try parser.parse()
+    let node = nodes.first as? TextNode
+
+    try expect(nodes.count) == 1
+    try expect(node?.text) == "Hello World"
+  }
+
+  $0.it("can parse a variable token") {
+    let parser = TokenParser(tokens: [
+      Token.Variable(value: "'name'")
+    ], namespace: Namespace())
+
+    let nodes = try parser.parse()
+    let node = nodes.first as? VariableNode
+    try expect(nodes.count) == 1
+    let result = try node?.render(Context())
+    try expect(result) == "name"
+  }
+
+  $0.it("can parse a comment token") {
+    let parser = TokenParser(tokens: [
+      Token.Comment(value: "Secret stuff!")
+    ], namespace: Namespace())
+
+    let nodes = try parser.parse()
+    try expect(nodes.count) == 0
+  }
+
+  $0.it("can parse a tag token") {
+    let parser = TokenParser(tokens: [
+      Token.Block(value: "now"),
+    ], namespace: Namespace())
+
+    let nodes = try parser.parse()
+    try expect(nodes.count) == 1
+  }
+
+  $0.it("errors when parsing an unknown tag") {
+    let parser = TokenParser(tokens: [
+      Token.Block(value: "unknown"),
+    ], namespace: Namespace())
+
+    try expect(try parser.parse()).toThrow(TemplateSyntaxError("Unknown template tag 'unknown'"))
+  }
+}