BUG: Import find_contours from correct location.

skimage/measure/__init__.py

@@ -1 +1 @@
-from find_contours import find_contours
+from find_contours import find_contours

skimage/measure/tests/test_find_contours.py

@@ -1,7 +1,7 @@
 import numpy as np
 from numpy.testing import *
 
-from skimage.find_contours import find_contours 
+from skimage.measure import find_contours 
 
 a = np.ones((8,8), dtype=np.float32)
 a[1:-1, 1] = 0