Moved tests to outside of src/ path

This allows them to be excluded from final built package.

pom.xml and .classpath updated

Unable to test due to lack of JUnit 5 in Eclipse Neon

.classpath

@@ -16,6 +16,11 @@
 			<attribute name="maven.pomderived" value="true"/>
 		</attributes>
 	</classpathentry>
-	<classpathentry kind="con" path="org.eclipse.jdt.junit.JUNIT_CONTAINER/4"/>
+	<classpathentry kind="src" output="target/test-classes" path="tests">
+		<attributes>
+			<attribute name="optional" value="true"/>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
 	<classpathentry kind="output" path="target/classes"/>
 </classpath>

pom.xml

@@ -9,6 +9,7 @@
 	</properties>
 	<build>
 		<sourceDirectory>src</sourceDirectory>
+		<testSourceDirectory>tests</testSourceDirectory>
 		<plugins>
 			<plugin>
 				<artifactId>maven-compiler-plugin</artifactId>
@@ -219,5 +220,10 @@
 			<artifactId>jetty-rewrite</artifactId>
 			<version>9.4.11.v20180605</version>
 		</dependency>
+		<dependency>
+			<groupId>org.bitcoinj</groupId>
+			<artifactId>bitcoinj-core</artifactId>
+			<version>0.14.7</version>
+		</dependency>
 	</dependencies>
 </project>