Added TextToSpeechManager to support dynamic speech (request 2)

[jbienzms]

This pull request contains the changes requested from the last pull request.

Namely:

1. No longer using Singleton < T >
2. Spelling corrected
3. Regions Removed

I also added the ability to speak SSML, which I had left out of the previous
pull request.

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. Obtain a reference to the TextTosSpeechManager by calling GetComponent on the GameObject where the script resides.
5. Call TextToSpeechManager.SpeakText("Hello World");
6. Alternatively call TextToSpeechManager.SpeakSsml("...");

[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.

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[jwittner]

Are you trying to throw this out of the method or just use this as a means to log the error in your catch below?

[jbienzms]

About to open attempt number 3. Closing this one.