Switch to Marionette automation driver

.gitignore

+*.log
+*.pyc
 *.xpi
\ No newline at end of file

test/runtests.py

+from marionette_harness.runtests import cli
+
+cli()

test/test-main.js

-var main = require("../");
-
-exports["test main"] = function(assert) {
-  assert.pass("Unit test running!");
-};
-
-exports["test main async"] = function(assert, done) {
-  assert.pass("Asynchronous unit test running!");
-  done();
-};
-
-require("sdk/test").run(exports);