Begin migration to web-component-tester.
Cleanup erroneous test files.
Migrate first race condition test to wct.
Fix test. Migrate to animationFrameFlush(locally defined for now).
Improve test name.
rename progress test.
Bring all tests in line with wct style.
Add TODO for mocking response.
Remove erroneous variable.
Scaffold improved test style.
Add basic response parsing tests for xml, json, and text.
Bring test suite to a minimal level of coverage.
remove erroneous debugger statement.
Merge pull request #40 from garlicnation/wct

Migrate core-ajax to web-component-tester tests.