Testing new Constructor API (tests are obviously failing)
Handling images in fixtures

Conflicts:
	test/unit/core.js
Removing $ from the global namespace to avoid conflicting with the internal dollar and tests

Conflicts:
	test/unit/core.js
Testing new `data-src` syntax.

- initial tests are failing because the old feature is still working (good way to know the old expectation we are going to break)
- new tests are  not working because basically it's not done yet
regex -> {width}

- removed Imager `regex` option
- implemented simple `{width}` interpolation
Fixed typo in test label.
Made timeout execution more explicit
Merge pull request #21 from oncletom/feature-data-src

[READY] `data-src` format