Update html.rst

Added demonstration of using routing in addCrumb
Update 2-5-migration-guide.rst

$this->assign('title', 'page title'); was being split across two lines in the documentation, updated to display on single line.
Merge pull request #1293 from alex-m/patch-2

Update 2-5-migration-guide.rst
Update html.rst
Only mention composer as the officially supported install method.
Merge pull request #1294 from ADmad/3.0-composer-only

Only mention composer as the officially supported install method.
Merge pull request #1286 from cakephp/remove-object

Remove mentions of Object.
Add find(threaded) docs.

Refs #1180
Add count() docs.

People will be looking for a replacement for find(count), put it where
they might be looking.
Link two count() methods together.
Added $options['monthNames'] array example

Without this example one might wonder why ['Jan', 'Feb', ...] doesn't work right
Merge pull request #1295 from spiliot/patch-9

Added $options['monthNames'] array example
Update development installation to use PHP server
Update port numbers
Corrected some orthografic mistakes
Merge pull request #1298 from lapin-b/patch-1

Corrected some orthografic mistakes
Show that idField and parentField are expanded default values.
Merge pull request #1296 from cakephp/issue-1180

Document find(threaded)
Update hash.rst

add example to map
Merge pull request #1297 from bcrowe/3.0-dev-install

3.0 - Update development installation to use PHP server