Updates pull request from Roman Tsypuk to convert the build system from

ant to gradle.  Removes linux and windows application launch scripts and
produces an executable jar with all resources included.

src/main/java/io/github/dsheirer/source/ComplexSource.java

@@ -0,0 +1,13 @@
+package io.github.dsheirer.source;
+
+import io.github.dsheirer.sample.Provider;
+import io.github.dsheirer.sample.SampleType;
+import io.github.dsheirer.sample.complex.ComplexBuffer;
+
+public abstract class ComplexSource extends Source implements Provider<ComplexBuffer>
+{
+	public ComplexSource()
+	{
+		super( SampleType.COMPLEX );
+	}
+}