Add Acquia to the Training section

Added Acquia to the training section since they were there before.

Please update your organization page and add training description.

Also noting we were on the previous list.
http://drupal.org/node/1299154

We need to put a description into the "training" field so it shows up on http://drupal.org/training

There is currently one line about training:

"Looking to improve your team's Drupal skills? Check our our global training calendar, delivered by our 40+ training partners http://training.acquia.com/events"

Recommended update:

START COPY

Acquia develop and maintain a standardized, up-to-date Drupal curriculum, and also offer custom courses to address specific training needs within your organization in on-site classroom-style courses. All training is delivered through our extensive training partner program. Check our our global training calendar http://training.acquia.com/events

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Added description except for the last url. There is a separate field for training url, so let's keep descriptions just textual.