chore: regenerate README (#112)

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<details><summary>Log from Synthtool</summary>

```
2021-03-10 01:16:35,757 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-pubsublite-spark/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-03-10 01:16:36,659 synthtool [DEBUG] > Wrote metadata to .github/readme/synth.metadata/synth.metadata.

```
</details>

Full log will be available here:
https://source.cloud.google.com/results/invocations/dd59780c-4231-48a1-83dd-be9f1c53d16e/targets

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.github/readme/synth.metadata/synth.metadata

@@ -4,14 +4,14 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-pubsublite-spark.git",
-        "sha": "f82087b17a6c6e44af235a7e6e7a4632874aef42"
+        "sha": "1bf772a275e76d6b7229d628b72d5dce4f5c8bc5"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "8c5628b86cfa8386de7b8fc1675e6b528b552d57"
+        "sha": "e5fa6d93e42918dd4a000a80b92be23f5f4c6ac7"
       }
     }
   ]

README.md

@@ -84,8 +84,11 @@ and manual Spark installations.
   ```
 
 ## Downloading and Using the Connector
-
-  The connector is available from the [Maven Central repository](https://search.maven.org/artifact/com.google.cloud/pubsublite-spark-sql-streaming). You can download and pass it in the `--packages` option when using the `spark-submit` command or set it via the `spark.jars.packages` [configuration property](https://spark.apache.org/docs/latest/configuration.html#available-properties).
+  The latest version of the connector is publicly available in the following link:
+  | Connector version | Link |
+  | --- | --- |
+  | 0.1.0 | `gs://spark-lib/pubsublite/pubsublite-spark-sql-streaming-0.1.0-with-dependencies.jar`([HTTP link](https://storage.googleapis.com/spark-lib/pubsublite/pubsublite-spark-sql-streaming-0.1.0-with-dependencies.jar)) |
+  The connector is also available from the [Maven Central repository](https://search.maven.org/artifact/com.google.cloud/pubsublite-spark-sql-streaming). You can download and pass it in the `--jars` option when using the `spark-submit` command.
 
 ## Compatibility
 | Connector version | Spark version |