docs: copy the mac wording for installing api-keys over to ios instructions

docs: copy the mac wording for installing api-keys over to ios instructions

The current wording says you 'should' install to build, but that is not
really true if you don't want to test some Google services and 'should'
sounds very strong.

The Mac version has nicer wording for directing users to install the API
keys if they want so we ported it over here.

BUG=None
R=sdefresne@chromium.org

Committed: https://crrev.com/b7c6e4eb7933958a2d273fe58b3e0da05885a006
Cr-Commit-Position: refs/heads/master@{#379885}

[tfarina, 2016-03-08 14:58:14]

https://codereview.chromium.org/1774133002/diff/1/docs/ios_build_instructions.md
File docs/ios_build_instructions.md (right):

https://codereview.chromium.org/1774133002/diff/1/docs/ios_build_instructions...
docs/ios_build_instructions.md:44: Before you build, you may want to
Is this better in the "Building" section? Or is it fine here?

[sdefresne, 2016-03-08 15:21:32]

lgtm

[tfarina, 2016-03-08 19:23:03]

The CQ bit was checked by tfarina@chromium.org

[commit-bot: I haz the power, 2016-03-08 19:23:29]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1774133002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1774133002/1

[commit-bot: I haz the power, 2016-03-08 19:28:42]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-03-08 19:30:31]

Description was changed from

==========
docs: copy the mac wording for installing api-keys over to ios instructions

The current wording says you 'should' install to build, but that is not
really true if you don't want to test some Google services and 'should'
sounds very strong.

The Mac version has nicer wording for directing users to install the API
keys if they want so we ported it over here.

BUG=None
R=sdefresne@chromium.org
==========

to

==========
docs: copy the mac wording for installing api-keys over to ios instructions

The current wording says you 'should' install to build, but that is not
really true if you don't want to test some Google services and 'should'
sounds very strong.

The Mac version has nicer wording for directing users to install the API
keys if they want so we ported it over here.

BUG=None
R=sdefresne@chromium.org

Committed: https://crrev.com/b7c6e4eb7933958a2d273fe58b3e0da05885a006
Cr-Commit-Position: refs/heads/master@{#379885}
==========

[commit-bot: I haz the power, 2016-03-08 19:30:31]

Patchset 1 (id:??) landed as
https://crrev.com/b7c6e4eb7933958a2d273fe58b3e0da05885a006
Cr-Commit-Position: refs/heads/master@{#379885}