Release to the maven central repository, improve readme file.

Author: javadev

README.md

@@ -4,6 +4,24 @@ underscore-java
 [![Build Status](https://secure.travis-ci.org/javadev/underscore-java.png)](https://travis-ci.org/javadev/underscore-java)
 [![Coverage Status](https://coveralls.io/repos/javadev/underscore-java/badge.png?branch=master)](https://coveralls.io/r/javadev/underscore-java)
 
+Requirements
+============
+
+Java 1.6 and later.
+
+Installation
+============
+
+### Maven users
+
+Add this dependency to your project's POM:
+
+    <dependency>
+      <groupId>com.github.javadev</groupId>
+      <artifactId>underscore</artifactId>
+      <version>1.0</version>
+    </dependency>
+
 Underscore-java is a java port of [Underscore.js](http://underscorejs.org/).
 
 In addition to porting Underscore's functionality, Underscore-java includes matching unit tests.

pom.xml

@@ -2,7 +2,7 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" 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.github</groupId>
+  <groupId>com.github.javadev</groupId>
   <artifactId>underscore</artifactId>
   <packaging>jar</packaging>
   <version>1.0</version>