Update .gitignore

.gitignore

@@ -1,23 +1,26 @@
-# Compiled class file
-*.class
+.gradle
+/build/
+!gradle/wrapper/gradle-wrapper.jar
 
-# Log file
-*.log
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
 
-# BlueJ files
-*.ctxt
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
 
-# Mobile Tools for Java (J2ME)
-.mtj.tmp/
-
-# Package Files #
-*.jar
-*.war
-*.nar
-*.ear
-*.zip
-*.tar.gz
-*.rar
-
-# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
-hs_err_pid*
+### NetBeans ###
+nbproject/private/
+build/
+nbbuild/
+dist/
+nbdist/
+classes/
+.nb-gradle/