Improves some method names and comments. Refactors parser

src/main/java/net/knarcraft/ffmpegconverter/converter/Converter.java

@@ -28,5 +28,5 @@ public interface Converter {
      * @param outFile    <p>The output file.</p>
      * @return <p>A list of commands</p>
      */
-    String[] builderCommand(String executable, File file, List<StreamObject> streams, String outFile);
+    String[] generateConversionCommand(String executable, File file, List<StreamObject> streams, String outFile);
 }