Introduce develop_git for conversion from develop.svn to develop.git

This is a possible location for the script to open the pull request. We'll see how things make sense as this gets built out.
Add Caveats section to readme

Users that are unfamiliar with the project may find some aspects unintuitive.  We should try and warn them so that they can have a better experience 

These are all ways that users broke VVV while I was helping them at WordCamp Lancaster
Alter language a bit in common caveats section
Merge pull request #1 from jeremyfelt/patch-5

Alter language a bit in common caveats section
Merge pull request #291 from aaronjorbin/patch-4

Add Caveats section to readme
Update CHANGELOG with other 1.1 changes
Correct links in previous CHANGELOG notes
Update version to 1.1 in README
Merge pull request #292 from Varying-Vagrant-Vagrants/release-1.1

[PR] Release 1.1
Implement develop_git and update provision script to git pull after the fact

Fixes Varying-Vagrant-Vagrants/VVV#154
Merge pull request #294 from x-team/154-develop-git

Implement develop_git and update provision script to git pull after the fact
Merge pull request #154 from Varying-Vagrant-Vagrants/154-develop-git

Connect develop.svn with (upcoming) develop.git
Move back to the ondrej/php55 PPA for PHP 5.5

The move to PHP 5.5 as stable in ondrej surprised us a long while
ago, but not we (and WordPress core) are better prepared.

This will cause the latest stable of PHP 5.5 to install during
provisioning if the package is not yet installed. To force,
a vagrant destroy and vagrant up should be used.
Remove php-apc package installation

PHP 5.5 brings us a built in Zend Opcache and it does not appear
that APC has been deemed compatible with PHP 5.5. Either way, it's
on the way out and we should drop it.

This means that anything relying on APC for an object cache will
not work. See also -> we install memcache.
Don't copy an APC ini that doesn't exist.
And don't tell everyone we copied the APC ini...
Provide a custom opcache.ini for php-fpm

This is a copy/paste from the default opcache config provided
in php.ini during installation. The next step will be to configure
a few settings.
Enable opcache and set initial memory limit to 128

This mimics the settings that were in place for APC.

We can address the log settings with another log ticket, as it
would be interesting to have a specific log file for opcache
errors, especially because it is new.

Some of the other settings are interesting enough to leave in this
file, but should probably only be changed on a project by project
basis until we know more.
Add a custom php5-fpm.conf file

The initial file is a direct copy/paste of that provided by
default in PHP 5.5. We can make customizations from here.

This will help when figuring out where to put logs.
Clone Opcache Status during provisioning

This provides a great dashboard to view opcache statistics.