Update package and class references, improve documentation, and remove outdated test

- Renamed package from com.waveletsolutions.robot to com.waveletsolutions.filtering
- Updated the main class reference in pom.xml to ensure the application runs correctly
- Improved class documentation to reflect the educational and professional use of signal processing techniques
- Removed outdated AppTest.java file, which was no longer relevant

pom.xml

@@ -2,7 +2,7 @@
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
   <modelVersion>4.0.0</modelVersion>
-  <groupId>com.waveletsolutions.robot</groupId>
+  <groupId>com.waveletsolutions.filtering</groupId>
   <artifactId>filter-view</artifactId>
   <packaging>jar</packaging>
   <version>1.0-SNAPSHOT</version>
@@ -70,7 +70,7 @@
               </execution>
           </executions>
           <configuration>
-              <mainClass>com.waveletsolutions.robot.App</mainClass>
+              <mainClass>com.waveletsolutions.filtering.App</mainClass>
           </configuration>
       </plugin>
       

src/main/java/com/waveletsolutions/filtering/App.java

@@ -41,8 +41,11 @@ import org.apache.commons.math3.transform.TransformType;
  *   <li>Real-time plots of both time-domain and frequency-domain (FFT) data.</li>
  * </ul>
  * 
- * This class is intended as an educational tool for students learning about signal processing 
- * in the context of controlling a robot motor.
+ * This class is intended as an educational tool for students and professional engineers 
+ * learning about signal processing techniques, such as filtering, in the context of real-time 
+ * signal control and visualization.
+ * It demonstrates the application of raised cosine and low-pass filters to signal data, 
+ * as well as the spectral analysis of filtered and non-filtered signals using FFT.
  * 
  * <h2>Usage:</h2>
  * <ol>

src/test/java/com/waveletsolutions/filtering/AppTest.java

@@ -1,4 +1,4 @@
-package com.waveletsolutions.robot;
+package com.waveletsolutions.filtering;
 
 import junit.framework.Test;
 import junit.framework.TestCase;