Add missing @OverRide statements; remove unnecessary import

Closes #66

Author: kohlschuetter

src/main/java/org/codehaus/mojo/templating/AbstractFilterSourcesMojo.java

@@ -78,14 +78,14 @@ public abstract class AbstractFilterSourcesMojo
      * Set of delimiters for expressions to filter within the resources. These delimiters are specified in the form
      * 'beginToken*endToken'. If no '*' is given, the delimiter is assumed to be the same for start and end. So, the
      * default filtering delimiters might be specified as:
-     * 
+     *
      * <pre>
      * &lt;delimiters&gt;
      *   &lt;delimiter&gt;${*}&lt;/delimiter&gt;
      *   &lt;delimiter&gt;@&lt;/delimiter&gt;
      * &lt;/delimiters&gt;
      * </pre>
-     * 
+     *
      * Since the '@' delimiter is the same on both ends, we don't need to specify '@*@' (though we can).
      */
     @Parameter
@@ -123,6 +123,7 @@ public abstract class AbstractFilterSourcesMojo
     protected MavenResourcesFiltering mavenResourcesFiltering;
 
     /** {@inheritDoc} */
+    @Override
     public void execute()
         throws MojoExecutionException
     {

src/test/java/org/codehaus/mojo/templating/AbstractFilterSourcesMojoTest.java

@@ -121,6 +121,7 @@ private static class MockCopyAnswer
         implements Answer<Void>
     {
 
+        @Override
         public Void answer( InvocationOnMock invocation )
             throws Throwable
         {