[DOCS] Add supported OSs and platforms to the SDK download page.

[DOCS] Add supported OSs and platforms to the SDK download page.

BUG=none
R=
TEST=none
NOTRY=true
(documentation only change)

Committed: https://crrev.com/c3be53f0316e7c75c2b0e9a084ae163e00d0d9bc
Cr-Commit-Position: refs/heads/master@{#297511}

[jpmedley, 2014-09-29 21:00:47]

jmedley@chromium.org changed reviewers:
+ jfb@chromium.org, mkearney@chromium.org, smain@chromium.org

[JF, 2014-09-30 21:05:55]

lgtm after typo fix.

https://codereview.chromium.org/604833006/diff/20001/native_client_sdk/src/do...
File native_client_sdk/src/doc/sdk/download.rst (right):

https://codereview.chromium.org/604833006/diff/20001/native_client_sdk/src/do...
native_client_sdk/src/doc/sdk/download.rst:81: Native Client supports several
operating systems, includingWindows, Linux, OSX,
Missing a space in "includingWindows".

[jpmedley, 2014-09-30 21:44:48]

The CQ bit was checked by jmedley@chromium.org

[commit-bot: I haz the power, 2014-09-30 21:46:12]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/604833006/60001

[commit-bot: I haz the power, 2014-09-30 21:47:33]

Committed patchset #4 (id:60001) as 51f18ecad6618125492c99a0ec1b29d20e626e68

[commit-bot: I haz the power, 2014-09-30 21:49:08]

Patchset 4 (id:??) landed as
https://crrev.com/c3be53f0316e7c75c2b0e9a084ae163e00d0d9bc
Cr-Commit-Position: refs/heads/master@{#297511}