adding maven structure

mvn archetype:generate -DgroupId=com.nammashoppingportal.app
-DartifactId=nammashoppingportal
-DarchetypeArtifactId=maven-archetype-webapp
pom structure

converted to basic maven build. mvn clean install generates the war and
compiles .
resolving conflict

resolving conflict
Merge pull request #3 from vvallabb/to_maven_structure

To maven structure