[MediaGalleries] Update overall package doc to include iphoto paragraph.

chrome/common/extensions/docs/templates/intros/mediaGalleries.html

 <h2 id="usage">Usage</h2>
 
 <p>The mediaGalleries API lets you prompt the user for permission to access
 media galleries on the user's computer. The permission dialog contains common
 media locations for the platform and allows the user to specify additional
 locations. From those locations, only media files will be present in the file
 system objects.</p>
 
 <h2 id="manifest">Manifest</h2>
 
@@ skipping 110 matching lines @@
 
 <h2 id="Picasa">Picasa</h2>
 
 <p>If present, the user's Picasa library can also be accessed as a media
 gallery. Directories on the filesystem scanned by Picasa are presented under
 folders/. Picasa Albums are presented under albums/. Albums and Folders that
 have duplicate names and dates will be uniquified using an incrementing
 integer in parenthesis before the extension. Duplicate filenames within the
 same Album will also be uniquified using an incrementing integer in parenthesis
 before the extension.</p>
+
+<h2 id="iPhoto">iPhoto</h2>
+
+<p>If present, the user's iPhoto library can be accessed as a media gallery.
+The files are structured within a subdirectory called "Albums/". Within that
+subdirectory, each album in the user's iPhoto library will appear as a
+subdirectory by name, and contain file entries for the photos in that album.
+Duplicate album names or image filenames with albums will get a disambiguating
+suffix like "(NN)" where NN is a unique number. Any items appearing in multiple
+albums in iPhoto will appear in all those albums in the gallery. If the user

[mkearney1, 2014/03/28 22:22:03]

From 'If' onwards could use some editing. Crazy sentences. Also, I don't think
the last sentence is necessary. How about something like:

If the user modifies any image within an album, a subdirectory called
"originals/" is added to the album directory. The "originals/" subdirectory
contains a copy of the modified image with the same filename.

+has modified any images within an album, there will be an additional
+subdirectory called "originals/" within the album directory, which will then
+contain the original image, which will have the same filename as the file in
+the album itself. The file as it appears in the album directory, though, will
+be the one the user has invested time cropping, rotating, or otherwise editing.

[not at google - send to devlin, 2014/03/28 18:19:00]

this is a pretty large block of text:

https://chrome-apps-doc.appspot.com/_patch/215433003/apps/mediaGalleries#iPhoto

but then again so are the others. perhaps look at a paragraph break or two here.

also is there some external documentation to link to?

[Greg Billock, 2014/03/28 18:28:51]

ok
sadly, no

[mkearney1, 2014/03/28 22:22:03]

Agree with kalman, that this could use some paragraph breaks.

On 2014/03/28 18:19:00, kalman wrote:

+</p>
+