Add Spring and IDEs specific files to .gitignore

Author: LizChe

.gitignore

@@ -1,3 +1,5 @@
+# Maven specific files
+
 target/
 pom.xml.tag
 pom.xml.releaseBackup
@@ -10,3 +12,25 @@ buildNumber.properties
 
 # Avoid ignoring Maven wrapper jar file (.jar files are usually ignored)
 !/.mvn/wrapper/maven-wrapper.jar
+
+# Spring specific files
+
+HELP.md
+mvnw.cmd
+mvnw
+
+# IntelliJ files
+
+.idea
+*.iml
+.classpath
+.settings
+.project
+
+# Vs code
+
+.vscode
+
+# System files
+
+.DS_Store