Adding logging with slf4j, improved indentation of Mojo, corrected versioning number, removed unnecessary comments

Author: capernix

tools/openapi-generator-maven-plugin/pom.xml

@@ -1,11 +1,9 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    <modelVersion>4.0.0</modelVersion>
-
-    <groupId>org.openmrs.plugin</groupId>
+    <modelVersion>4.0.0</modelVersion>    <groupId>org.openmrs.plugin</groupId>
     <artifactId>openapi-generator-maven-plugin</artifactId>
-    <version>1.0-SNAPSHOT</version>
+    <version>1.0.0-SNAPSHOT</version>
     <packaging>maven-plugin</packaging>
 
     <name>OpenAPI Generator Maven Plugin</name>