update gitignore and maven config for spring

.gitignore

@@ -1,19 +1,10 @@
+HELP.md
 target/
-!.mvn/wrapper/maven-wrapper.jar
+.mvn/wrapper/maven-wrapper.jar
 !**/src/main/**/target/
 !**/src/test/**/target/
-.kotlin
 
-### IntelliJ IDEA ###
-.idea/modules.xml
-.idea/jarRepositories.xml
-.idea/compiler.xml
-.idea/libraries/
-*.iws
-*.iml
-*.ipr
-
-### Eclipse ###
+### STS ###
 .apt_generated
 .classpath
 .factorypath
@@ -22,6 +13,12 @@ target/
 .springBeans
 .sts4-cache
 
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
 ### NetBeans ###
 /nbproject/private/
 /nbbuild/
@@ -34,6 +31,3 @@ build/
 
 ### VS Code ###
 .vscode/
-
-### Mac OS ###
-.DS_Store