Document exclusion for license plugin

Author: jdaugherty

build.gradle

@@ -7,6 +7,7 @@ buildscript {
         classpath "io.github.gradle-nexus:publish-plugin:$gradleNexusPublishPluginVersion"
         classpath "com.netflix.nebula:gradle-extra-configurations-plugin:$gradleExtraConfigurationsPluginVersion"
         classpath "com.bmuschko:gradle-nexus-plugin:$gradleNexusPluginVersion"
+        // Due to https://github.com/hierynomus/license-gradle-plugin/issues/161, spring must be excluded
         classpath "gradle.plugin.com.hierynomus.gradle.plugins:license-gradle-plugin:$gradleLicensePluginVersion", {
             exclude group: 'org.springframework', module: 'spring-core'
         }