chore: regenerate README (#72)

This PR was generated using Autosynth. 🌈


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

```
2020-10-20 08:18:37,266 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-workflows/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working directory clean
2020-10-20 08:18:38,217 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/d85411cb-e9fb-4185-bb91-abc835b715f8/targets

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java-workflows/.github/readme/synth.metadata/synth.metadata

@@ -4,14 +4,14 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-workflows.git",
-        "sha": "d7c19f6b99a8f8417f8474efbfddf644516e1e9d"
+        "sha": "f6877e8332ec8a26332ef5309d9e3ca82229bfe5"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "da5c6050d13b4950c82666a81d8acd25157664ae"
+        "sha": "5a506ec8765cc04f7e29f888b8e9b257d9a7ae11"
       }
     }
   ]

java-workflows/README.md

@@ -27,11 +27,11 @@ If you are using Maven, add this to your pom.xml file:
 
 If you are using Gradle, add this to your dependencies
 ```Groovy
-compile 'com.google.cloud:google-cloud-workflows:0.1.1'
+compile 'com.google.cloud:google-cloud-workflows:0.1.2'
 ```
 If you are using SBT, add this to your dependencies
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-workflows" % "0.1.1"
+libraryDependencies += "com.google.cloud" % "google-cloud-workflows" % "0.1.2"
 ```
 
 ## Authentication