chore: regenerate README (googleapis#342)

Author: yoshi-automation

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

@@ -4,14 +4,14 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-resourcemanager.git",
-        "sha": "84a518da37185f103be29e8db04704772cbf7f35"
+        "sha": "440d9c9cacb15ad87c57d94f7efb4a4a6239a98f"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "6133907dbb3ddab204a17a15d5c53ec0aae9b033"
+        "sha": "a3e990f3545dc8ccd384a75d20ce9cb185ca6a28"
       }
     }
   ]

java-resourcemanager/README.md

@@ -46,10 +46,17 @@ If you are using Maven without BOM, add this to your dependencies:
 
 ```
 
-If you are using Gradle, add this to your dependencies
+If you are using Gradle 5.x or later, add this to your dependencies
+```Groovy
+implementation platform('com.google.cloud:libraries-bom:16.2.0')
+
+compile 'com.google.cloud:google-cloud-resourcemanager'
+```
+If you are using Gradle without BOM, add this to your dependencies
 ```Groovy
 compile 'com.google.cloud:google-cloud-resourcemanager:0.118.6-alpha'
 ```
+
 If you are using SBT, add this to your dependencies
 ```Scala
 libraryDependencies += "com.google.cloud" % "google-cloud-resourcemanager" % "0.118.6-alpha"