Update .gitignore

Author: sbrannen

.gitignore

@@ -1,12 +1,28 @@
+# Gradle
+.gradle
+build/
+
+# Ignore Gradle GUI config
+gradle-app.setting
+
+# Eclipse
 .classpath
+.settings/
 .project
-.settings
 .springBeans
+bin/
+
+# IntelliJ
 .idea
+spring-events.iml
+
+# TestNG
+test-output/
+
+# Misc
+*.log
 target
 *.sw?
-.gradle
-build
 .DS_Store
 *.iml
 atlassian-ide-plugin.xml