* Mark the C# extension as non-preview
This changes the branding on the C# extension so that it is no longer labeled a 'preview'.
Two changes:
1. Change `preview` to `false` in package.json
2. Update the license that is used in official builds of the C# extension. This new EULA is no longer a pre-release EULA and it also has the latest text.
* Update README.md as well
This commit addresses issue #42 and other licensing concerns --
1. Update the readme to reference licensing
2. Change the package.json to reference the EULA rather than the source license.
3. Checkin the OpenDebugAD7 license so that it has a home on the web. Needed
for its nuget package.