setup
add CheckBox widget to viewer.  fix ComboBox widget docstring
added tv_denoise.py viewer example using the CheckBox
fix image scaling in tv_denoise.py example
code formatting fixes
Remove blit background when overlay changes
Improve desciption of inverse_map and add option to direclty pass coordinates
Improve inverse_map description
Make warp function N-D compatible, and add example to doc string
Remove deprecated parameter of warp
Highlight fact that warp_coords is only meant for 2(+1)-D images
Make error message for wrong input dim more explicit
Add comments to different conditional paths
Add support for 2(+1)D images and given output_shape for 2D images
Make row, col ordering clearer in doc string
updated local_binary_pattern documentation

The reference link was divided into two lines thereby linking to only half the url
PEP8 formatting
Merge pull request #1150 from blink1073/overlay-blit

Remove blit background when overlay changes
Fixed ellipse symmetry and added some tests.
Added float conversions for python2.x