Merge pull request #27 from GianDeManincor/adding-commit-and-rollback-documentation

Enhance How to use it documentation

Author: dearrudam

README.adoc

@@ -14,6 +14,8 @@ Facilitate manipulation such as managing POM dependencies through CLI (command l
 
 == How to use it
 
+==== Add a dependency
+
 Let's suppose that you need to add JUnit Jupiter version 5.9.2 into your POM in the test scope, you could perform the following command inside on the target maven project:
 
 [source, sh]
@@ -41,6 +43,37 @@ Then you'll be able to perform the plugin by its prefix:
 mvn pom-editor:add-dep -Dgav='org.junit.jupiter:junit-jupiter:5.9.2' -Dscope=test
 ----
 
+==== Confirm the changes
+
+When you perform the goal add-dep with the command below:
+
+[source,sh]
+$ mvn pom-editor:add-dep -Dgav='junit:junit:4.13'
+
+The plugin will create a backup POM file based on the target POM if such one doesn't exist.
+
+[source,sh]
+$ tree .
+.
+├── pom.xml
+└── pom.xml.backup
+
+You could perform multiple times the add-dep goal as you need.
+
+Then, when you're done, if there's no problem with the changed POM, you could confirm the changes by performing the commit goal.
+
+[source,sh]
+$ mvn pom-editor:commit
+
+==== Revert the changes
+
+You could also perform the rollback goal:
+
+[source,sh]
+$ mvn pom-editor:rollback
+
+This goal will revert the changes, replacing the changed POM file to the backup POM file.
+
 == Goals
 
 It covers the following goals: