update segmentation image, indoor example minor update

minor installation instruction update

Update terminology.rst (NVIDIA#156)

Correct kernel map for Kernel I. 
 - According to the animation the input with index 0 maps also to output with index 0 in kernel I.

v0.4.2

Squashed commit of the following:

commit 48044e6c46a23337c7f64fd9b1c3075433ceb5b4
Author: Chris Choy <[email protected]>
Date:   Fri Mar 13 20:52:57 2020 -0700

    minor updates

commit 0084e80c00df63f12561cd63c4503dd5bf413d10
Author: Chris Choy <[email protected]>
Date:   Fri Mar 13 17:30:02 2020 -0700

    minor doc updates

patch release v0.4.1

minor doc fixes

tensor_stride_set flag

CPU ONLY build and minor doc changes

Squashed commit of the following:

commit 26fb9f310e9a62e9775b7e6a2aabd424d0d8e521
Author: Chris Choy <[email protected]>
Date:   Wed Dec 25 02:12:18 2019 -0800

    manifest, CPU update

commit 1bc1456ccb0281486c0d08c2e5626bb4ee3047ff
Author: Chris Choy <[email protected]>
Date:   Wed Dec 25 00:13:47 2019 -0800

    CPU ONLY build

commit 0f8b07253c4a24683f9dcd0d67a03e926aa20a5d
Author: Chris Choy <[email protected]>
Date:   Tue Dec 24 23:37:03 2019 -0800

    minor update on training doc

commit 31766060189b49c2aeceb0584f579e8ae26afc5e
Author: Chris Choy <[email protected]>
Date:   Tue Dec 24 13:45:48 2019 -0800

    update sparse_quantize doc

faster coordsman