Update README.md

Near production ready README

README.md

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-# tools-java
-SPDX Command Line Tools using the Spdx-Java-Library
+# Overview
+The Software Package Data Exchange (SPDX) specification is a standard format for communicating the components, licenses and copyrights associated with a software package.
 
-Note: This tools is in development and is partially implemented.  Reviews, suggestions are welcome especially as it relates to the design.  Please enter an issue with any suggestions.
+  * [SPDX License List](http://spdx.org/licenses/)
+  * [SPDX Vocabulary Specification](http://spdx.org/rdf/terms)
 
-# Commands
+These tools are published by the SPDX Workgroup
+see [http://spdx.org/](http://spdx.org/)
 
-Following are the commands available:
+## Getting Starting
 
-<TO BE FILLED IN>
+The SPDX Tool binaries can be downloaded from the [BinTray SPDX Tools Java](https://bintray.com/spdx/spdx-tools/tools-java) repo under the respective release.  The package is also available in [Maven Central](https://search.maven.org/artifact/org.spdx/tools-java) (organization org.spdx, artifact tools-java).
 
-# Programmatic Access
+See the Syntax section below for the commands available.
+
+## Contributing
+See the file CONTRIBUTING.md for information on making contributions to the SPDX tools.
+
+## Issues
+Report any security related issues by sending an email to [spdx-tools-security@lists.spdx.org](mailto:spdx-tools-security@lists.spdx.org)
+
+Non-security related issues should be added to the [SPDX tools issues list](https://github.com/spdx/tools-java/issues)
+
+## Syntax
+The command line interface of the spdx tools can be used like this:
+
+    java -jar spdx-tools-jar-with-dependencies.jar <function> <parameters> 
+
+## SPDX format converters
+The following converter tools are provided by the spdx tools:
+
+  * TagToSpreadsheet
+  * TagToRDF
+  * RdfToTag
+  * RdfToHtml
+  * RdfToSpreadsheet
+  * SpreadsheetToRDF
+  * SpreadsheetToTag
+
+Example to convert a SPDX file from tag to rdf format:
+
+    java -jar spdx-tools-jar-with-dependencies.jar TagToRDF Examples/SPDXTagExample.tag TagToRDF.rdf
+
+## Compare utilities
+The following  tools can be used to compare one or more SPDX documents:
+
+  * CompareSpdxDocs
+
+    Example to compare two SPDX files provided in rdf format:
+
+        java -jar spdx-tools-jar-with-dependencies.jar CompareSpdxDocs doc1 doc2 [output]
+
+  * CompareMultipleSpdxDocs
+
+    Example to compare multiple SPDX files provided in rdf format and provide a spreadsheet with the results:
+
+        java -jar spdx-tools-jar-with-dependencies.jar CompareMultipleSpdxDocs output.xls doc1 doc2 ... docN
+
+## SPDX Viewer
+The following tool can be used to "Pretty Print" an SPDX document.
+
+  * SPDXViewer
+
+Sample usage:
+
+    java -jar spdx-tools-jar-with-dependencies.jar SPDXViewer TestFiles/SPDXRdfExample.rdf
+
+## Verifier
+The following tool can be used to verify an SPDX document:
+
+  * Verify
+
+Sample usage:
+
+    java -jar spdx-tools-jar-with-dependencies.jar Verify TestFiles/SPDXRdfExample.rdf
+
+## Generators
+The following tool can be used to generate an SPDX verification code from a directory of source files:
+
+  * GenerateVerificationCode sourceDirectory
+
+  Sample usage:
+
+        java -jar spdx-tools-jar-with-dependencies.jar GenerateVerificationCode sourceDirectory [ignoredFilesRegex]
+
+## SPDX Validation Tool
+The SPDX Workgroup provides an online interface to validate, compare, and convert SPDX documents in addition to the command line options above. The [SPDX Validation Tool](http://13.57.134.254/app/) is an all-in-one portal to upload and parse SPDX documents for validation, comparison and conversion and search the SPDX license list. 
+
+# License
+A complete SPDX file is available including dependencies is available in the bintray and Maven repos.
+
+    SPDX-License-Identifier:	Apache-2.0
+    PackageLicenseDeclared:	Apache-2.0
+
+# Development
+
+## Build
+You need [Apache Maven](http://maven.apache.org/) to build the project:
+
+    mvn clean install
 
-Tools functionality can be accessed programatically by calling <TO BE FILLED IN>
 
 ## Update for new properties or classes
 To update Spdx-Tools-Library, the following is a very brief checklist: