handle ReturnStatements in block binding - closes #24

test/fixtures/block-binding/return/actual.js

@@ -0,0 +1,16 @@
+function student () {
+  let isStudent = true;
+  return Object.freeze({
+    isStudent
+  });
+}
+
+function student () {
+  let isStudent = true;
+  while (true) {
+    let test = "foo";
+    return Object.freeze({
+      isStudent
+    });
+  }
+}

test/fixtures/block-binding/return/expected.js

@@ -0,0 +1,14 @@
+function student() {
+  var isStudent = true;
+  return Object.freeze({ isStudent: isStudent });
+}
+
+function student() {
+  var isStudent = true;
+  while (true) {
+    return function () {
+      var test = 'foo';
+      return Object.freeze({ isStudent: isStudent });
+    }();
+  }
+}