Add examples section in README.

README.md

@@ -27,6 +27,7 @@ and understand how to run and work with Dgraph.
   - [Commit a transaction](#commit-a-transaction)
   - [Cleanup Resources](#cleanup-resources)
   - [Setting Metadata Headers](#setting-metadata-headers)
+- [Examples](#examples)
 - [Development](#development)
   - [Building the source](#building-the-source)
   - [Running tests](#running-tests)
@@ -300,6 +301,13 @@ metadata = [("auth-token", "the-auth-token-value")]
 dg.alter(op, metadata=metadata)
 ```
 
+## Examples
+
+- [simple][]: Quickstart example of using pydgraph.
+- [tls][]: Example of using pydgraph with a Dgraph cluster secured with TLS.
+
+[tls]: https://github.com/dgraph-io/pydgraph/tree/master/examples/tls
+
 ## Development
 
 ### Building the source