Copy edit completed - Update batch-dotnet-get-started.md

Please note:

- This topic uses both "Azure Batch Library for .NET" and ".NET library for the Azure Batch service." This seems to be an inconsistency.
- In the first bulleted list, some items begin with a verb and some begin with a noun. For the sake of parallelism, it would be better to standardize. (I would normally do that, but in this case, it requires technical knowledge.)
- Please confirm that http://yiding.blob.core.windows.net/gettingstarted is approved for public use (that is, it's accurate exactly as shown or includes an approved fictitious name).
- The following sentence doesn't make sense: "You can also download the Visual Studio Extension for Batch Apps, which includes a project template to cloud-enable applications and ability to deploy an application here or via searching for Batch Apps in Visual Studio via the Extensions and Updates menu item." Something went awry after "cloud-enable applications." It's possible that the writer meant to create two or three sentence here instead of one.
- The article seems to use "invoke" and "call," as well as "application" and "program," interchangeably. If that's the case, it would be better to standardize.
- Programming elements (classes, properties, methods, etc.) are normally bold. In this article, none of them are bold. Please add the bold formatting if the template allows it. It's also a good practice to add a descriptor (a noun that identifies the type of programming element) at first mention of each programming element.
- Please confirm that "embarrassingly parallel" is accurate. I'm not sure what it means.
- Please confirm that "proc" (in regular text) is accurate as is. If it's a nonstandard abbreviation, please spell out the word.
- "RequiredFiles is an empty collection by default..." should be part of the preceding bulleted list.
- I used double hyphens to denote em dashes, because I read that this is the right technique to use in markdown. But the preview shows double hyphens instead of em dashes.