chore: regenerate README (#186)

This PR was generated using Autosynth. 🌈


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

```
2020-10-31 08:10:06,795 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-grafeas/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working directory clean
2020-10-31 08:10:07,727 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/329daf91-af07-4403-bd79-f8323f8c2a21/targets

- [ ] To automatically regenerate this PR, check this box.

Author: yoshi-automation

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

@@ -4,14 +4,14 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-grafeas.git",
-        "sha": "10f444f146daef00e0c122ec2b79d914ff8e1dd9"
+        "sha": "da54c289067438bd5bff1504a32b88138ab24f3b"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "7c5370937dd9ba9dcf9cd7d2af880a58b389b4f1"
+        "sha": "b19b401571e77192f8dd38eab5fb2300a0de9324"
       }
     }
   ]

README.md

@@ -17,17 +17,17 @@ If you are using Maven, add this to your pom.xml file:
 <dependency>
   <groupId>io.grafeas</groupId>
   <artifactId>grafeas</artifactId>
-  <version>1.0.2</version>
+  <version>1.0.3</version>
 </dependency>
 ```
 
 If you are using Gradle, add this to your dependencies
 ```Groovy
-compile 'io.grafeas:grafeas:1.0.2'
+compile 'io.grafeas:grafeas:1.0.3'
 ```
 If you are using SBT, add this to your dependencies
 ```Scala
-libraryDependencies += "io.grafeas" % "grafeas" % "1.0.2"
+libraryDependencies += "io.grafeas" % "grafeas" % "1.0.3"
 ```
 
 ## Authentication