How to get objdetect module from python in latest openCV (3.0.0-dev)

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I want to use cool text detection algorithm from new OpenCV. So I installed latest version from github (rev. 4f48a05906adb06b05fb6673c2cc0d790480b93d), and now I have:

In [1]: import cv2
libdc1394 error: Failed to initialize libdc1394  # thats ok, I don't care about camera
In [2]: cv2.__version__
Out[2]: '3.0.0-dev'

Even more, it works fine:

In [3]: image = cv2.imread('some_test_image.png')
In [4]: image.shape
Out[4]: (52, 236, 3)

Now I want to get something from objdetect module - for example, ERFilter. And this is where problem starts:

In [5]: cv2.ERFilter
AttributeError: 'module' object has no attribute 'ERFilter'
In [6]: cv2.objdetect
AttributeError: 'module' object has no attribute 'objdetect'

According to binding docs python bindings should be generated automatically, so I'm obviously missing something.

Any help, please?