Added TextToSpeechManager to support dynamic speech

[jbienzms]

Please note that the code for TextToSpeechManager is 100% new code by
me. However, portions of the Wav class were based on this sample:
http://answers.unity3d.com/questions/737002/wav-byte-to-audioclip.html

The author does release that code for others to use and I have
attributed the article in the class comments, but if this source
is not acceptable we will need to rewrite the WAV class.

Here are the steps for adding Text to Speech to your own apps:

1. Create an AudioSource somewhere in the scene. I recommend creating it on an empty GameObject that is a child of the Main Camera and is positioned about 0.6 units above the camera.
2. Add the TextToSpeechManager component to the scene.
3. Assoicate the AudioSource with the manager.
4. In code call TextToSpeechManager.Instance.Speak("Hello World");

[msftclas]

Hi @jbienzms, I'm your friendly neighborhood Microsoft Pull Request Bot (You can call me MSBOT). Thanks for your contribution!

It looks like you're a Microsoft contributor (Jared Bienz). If you're full-time, we DON'T require a Contribution License Agreement. If you are a vendor, please DO sign the electronic Contribution License Agreement. It will take 2 minutes and there's no faxing! https://cla.microsoft.com.

TTYL, MSBOT;

[keveleigh]

Looks like the default region name was accidentally left in! Also, since each region really only contains one variable/method, it might be okay to leave them all out.
We haven't really been using regions in the Toolkit so far, so style-matching-wise it might be best to remove them. Others can weigh in with their opinions though!

[jbienzms]

I'm not tied to the regions. I'm willing to let them go for the sake of matching style.

[jbienzms]

About to submit a new pull request with all of the above change requests implemented, so I'll close this pull request.