Added link to up for grabs issues, small formatting changes, cruft removal

Author: Sarabeth-Jaffe-Microsoft

README.md

@@ -22,8 +22,8 @@ Full-framework-only build from `master` (deprecated):
 
 * Clone the sources: `git clone https://github.com/Microsoft/msbuild.git`
 
-### Building
-## Building MSBuild with VS 2015
+## Building
+### Building MSBuild with VS 2015
 For the full supported experience, you will need to have Visual Studio 2015. You can open the solution in Visual Studio 2017 RC, but you will encounter issues building with the provided scripts.
 
 To get started on **Visual Studio 2015**:
@@ -36,7 +36,7 @@ To get started on **Visual Studio 2015**:
 3. Build the code using the `cibuild.cmd` script.
 5. Open src/MSBuild.sln solution in Visual Studio 2015.
 
-## Building MSBuild in Unix (Mac & Linux)
+### Building MSBuild in Unix (Mac & Linux)
 MSBuild's xplat branch allows MSBuild to be run on Unix Systems. Set-up instructions can be viewed on the wiki:   [Building Testing and Debugging on .Net Core MSBuild](https://github.com/Microsoft/msbuild/wiki/Building-Testing-and-Debugging-on-.Net-Core-MSBuild)
 
 ## Localization
@@ -45,14 +45,13 @@ You can turn on localized builds via the `/p:LocalizedBuild=true` command line a
 ### How to Engage, Contribute and Provide Feedback
 This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/). For more information see the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/) or contact [[email protected]](mailto:[email protected]) with any additional questions or comments.
 
+#### Getting Started
 Before you contribute, please read through the contributing and developer guides to get an idea of what kinds of pull requests we will or won't accept.
 
 * [Contributing Guide](https://github.com/Microsoft/msbuild/wiki/Contributing-Code)
 * [Developer Guide](https://github.com/Microsoft/msbuild/wiki/Building-Testing-and-Debugging)
 
-Want to get more familiar with what's going on in the code?
-* [Pull requests](https://github.com/Microsoft/msbuild/pulls): [Open](https://github.com/Microsoft/msbuild/pulls?q=is%3Aopen+is%3Apr)/[Closed](https://github.com/Microsoft/msbuild/pulls?q=is%3Apr+is%3Aclosed)
-* [Issues](https://github.com/Microsoft/msbuild/issues)
+Looking for something to work on? This list of [up for grabs issues](https://github.com/Microsoft/msbuild/issues?q=is%3Aopen+is%3Aissue+label%3Aup-for-grabs) is a great place to start.
 
 You are also encouraged to start a discussion by filing an issue or creating a gist.