增加gitignore

.gitignore

+# Compiled class file
 *.class
+*.iml
+*.idea
+target/
+logs/
+# Log file
+*.log
+
+# BlueJ files
+*.ctxt
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
 
 # Package Files #
 *.jar
 *.war
 *.ear
-/target/
+*.zip
+*.tar.gz
+*.rar
 
-# eclipse
-.settings/
-.classpath
-.project
-logs/
-
-*.log
-
-# idea
-.idea/
-*.iml
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
 
 *velocity.log*