typo
Merge pull request #1101 from tioover/master

typo
Complete the Motor example.
Bugfix in asynchronous_fetch example code.
Properly restore ASYNC_TEST_TIMEOUT after test.
Merge pull request #1105 from ajdavis/patch-1

Complete the Motor example.
Merge pull request #1106 from ajdavis/patch-2

Bugfix in asynchronous_fetch example code.
Merge pull request #1107 from ajdavis/patch-3

Properly restore ASYNC_TEST_TIMEOUT after test.
Use sphinx_rtd_theme instead of our lightly-customized version of sphinx default.

The main benefit of this change is the responsive layout for phones and
tablets.
Install sphinx_rtd_theme when running sphinx tests.
Update gen docs: deemphasize Task, Callback, and Wait.