Add a link to the apps I/O presentation from the docs.

Add a link to the apps I/O presentation from the docs.

Also fix an overly long sentence.

R=mkearney@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=149009

[Mihai Parparita -not on Chrome, 2012-07-21 00:48:51]

Staged at http://www.corp.google.com/~mihaip/no_crawl/docs/apps/about_apps.html

[mkearney1, 2012-07-24 19:12:03]

http://codereview.chromium.org/10790111/diff/1/chrome/common/extensions/docs/...
File chrome/common/extensions/docs/static/about_apps.html (right):

http://codereview.chromium.org/10790111/diff/1/chrome/common/extensions/docs/...
chrome/common/extensions/docs/static/about_apps.html:19: presentation</a>)
This looks and reads a little bit funny. 

Can we create a proper note at the end of this section in active voice,
something like: 

Watch the Chrome Apps Google I/O presentation for an in-depth introduction.

[Mihai Parparita -not on Chrome, 2012-07-24 23:25:08]

http://codereview.chromium.org/10790111/diff/1/chrome/common/extensions/docs/...
File chrome/common/extensions/docs/static/about_apps.html (right):

http://codereview.chromium.org/10790111/diff/1/chrome/common/extensions/docs/...
chrome/common/extensions/docs/static/about_apps.html:19: presentation</a>)
On 2012/07/24 19:12:03, mkearney1 wrote:
> This looks and reads a little bit funny. 
> 
> Can we create a proper note at the end of this section in active voice,
> something like: 
> 
> Watch the Chrome Apps Google I/O presentation for an in-depth introduction.

Done.

[mkearney1, 2012-07-27 17:29:57]

lgtm