Added documentation of the new EnvVar

Signed-off-by: Roland Asmann <roland.asmann@gmail.com>

docs/ENV.md

@@ -24,6 +24,7 @@ The following environment variables are available to configure the bom generatio
 | GRADLE_HOME                  | Specify gradle home                                                                                                                                                                                                                                                                                              |
 | GRADLE_CMD                   | Set to override gradle command                                                                                                                                                                                                                                                                                   |
 | GRADLE_DEPENDENCY_TASK       | By default cdxgen use the task "dependencies" to collect packages. Set to override the task name.                                                                                                                                                                                                                |
+| GRADLE_INCLUDED_BUILDS       | Comma-separated list of 'includedBuilds' modules that should be scanned on top of all the modules of your projects. Since includedBuilds can't be found automatically, they have to be listed here. Use gradle-conventions (include the ':'-prefix) for the names.                                               |
 | GRADLE_RESOLVE_FROM_NODE     | If some of your gradle modules are included from node (eg when using expo or react-native), set this to true to use the npm-packages as your dependencies. The big advantage of this, is that the generated purls will be of actually known components (eg in OSS Index) instead of generic names for the packages. |
 | GRADLE_SKIP_MODULES          | Comma-separated list of modules to skip during the "dependencies" task. This can be useful if you have modules that would fail the gradle build, eg when they do not have dependencies in the given configuration. Use "root" if the top most module should be skipped, use their gradle-name (so WITH leading ":") for all others. |
 | SBT_CACHE_DIR                | Specify sbt cache directory. Useful for class name resolving                                                                                                                                                                                                                                                     |