Build cleanups (#4)

* Fix javadoc error so javadoc JAR can be built

* Add source & javadoc build plugins. Set source encoding

pom.xml

@@ -34,6 +34,9 @@
     <developerConnection>scm:git:https://github.com/OpenRefine/simile-vicino.git</developerConnection>
     <url>https://github.com/OpenRefine/simile-vicino</url>
   </scm>
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+  </properties>
   <dependencies>
     <dependency>
       <groupId>com.wcohen</groupId>
@@ -51,4 +54,34 @@
       <version>20050911</version>
     </dependency>
   </dependencies>
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-source-plugin</artifactId>
+        <version>3.2.1</version>
+        <executions>
+          <execution>
+            <id>attach-sources</id>
+            <goals>
+              <goal>jar</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-javadoc-plugin</artifactId>
+        <version>3.2.0</version>
+        <executions>
+          <execution>
+            <id>attach-javadocs</id>
+            <goals>
+              <goal>jar</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
 </project>

src/edu/mit/simile/vicino/vptree/NodeSorter.java

@@ -10,10 +10,10 @@ public void sort(Node nodes[]) {
     }
 
     /**
-     * Sort array of Objects using the QuickSort algorithm.
+     * Sort array of Nodes using the QuickSort algorithm.
      * 
-     * @param s
-     *            An Object[].
+     * @param nodes
+     *            An array of Node
      * @param lo
      *            The current lower bound.
      * @param hi