consistent indentation (spaces, not tabs)

modules/swagger-codegen-maven-plugin/src/main/java/io/swagger/codegen/plugin/CodeGenMojo.java

@@ -166,7 +166,7 @@ public class CodeGenMojo extends AbstractMojo {
         try {
             new DefaultGenerator().opts(input).generate();
         } catch (Exception e) {
-			// Maven logs exceptions thrown by plugins only if invoked with -e
+            // Maven logs exceptions thrown by plugins only if invoked with -e
         	// I find it annoying to jump through hoops to get basic diagnostic information,
         	// so let's log it in any case:
             getLog().error(e); 

modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultGenerator.java

@@ -511,8 +511,8 @@ public class DefaultGenerator extends AbstractGenerator implements Generator {
                     }
                 }
                 catch (Exception ex) {
-                	String msg = "Could not process operation:\n" //
-                	    + "  Tag: " + tag + "\n"//
+                    String msg = "Could not process operation:\n" //
+                        + "  Tag: " + tag + "\n"//
                         + "  Operation: " + operation.getOperationId() + "\n" //
                         + "  Resource: " + httpMethod + " " + resourcePath + "\n"//
                         + "  Definitions: " + swagger.getDefinitions();