Add link to docs and tutorials in the README. (apache#8832)

Most project pages on GitHub have a README.md file with a clear link to installation or tutorial material for new users.
While there is a link to Documentation, it's not that obvious, and adding a more explicit "getting started" link may be
helpful for new TVM users trying to navigate the project.

README.md

@@ -37,7 +37,13 @@ Branches
 
 License
 -------
-© Contributors Licensed under an [Apache-2.0](LICENSE) license.
+TVM is licensed under the [Apache-2.0](LICENSE) license.
+
+Getting Started
+---------------
+Check out the [TVM Documentation](https://tvm.apache.org/docs/) site for installation instructions, tutorials, examples, and more.
+The [Getting Started with TVM](https://tvm.apache.org/docs/tutorials/get_started/introduction.html) tutorial is a great
+place to start.
 
 Contribute to TVM
 -----------------