diff --git a/README.md b/README.md
index 9e5b9cb8291a4d1c71abd536365a9d8590045d78..fa78a8b448d37d31c1cb93830c743c1b939b6f3e 100644
--- a/README.md
+++ b/README.md
@@ -1,40 +1,129 @@
 ucoinj
 ======
 
-uCoin Java API.
+uCoin Java Client API.
 
 
-## Compile
 
-Install required dependencies:
+## Architecture
+
+uCoinj has four main components :
 
- - Install [libsodium](http://doc.libsodium.org/installation/index.html)
+ - shared: common classes
+ 
+ - core-client: a Client API to access to a uCoin network.
+   
+ - elasticsearch: a tools to index all blockchain and more.
+    
+ - web: a web client (HTML + JS + REST service), elasticsearch for data navigation, payement and more !
 
-   - Linux: after [installation](http://doc.libsodium.org/installation/index.html), make sure the file 'libsodium.so' exists on: /usr/local/lib or /opt/local/lib.
-     If not, create a symbolic link.
 
-   - Windows: copy the file 'sodium.dll' into directory 'ucoinj-core/lib/'
+## Test it
 
- - Install [Maven 3](http://maven.apache.org/).
+The elasticsearch component is ready to use !
 
-Get the source code, then compile using Maven:
+ - Install Java JRE 7 or more.
+ 
+    - Windows: see [Oracle web site](http://oracle.com/java/index.html)
+    
+    - Linux (Ubuntu):
  
 ```bash
-$ mvn install
+$ sudo apt-get install openjdk-8-jre 
 ```
+
+ - Install [libsodium](http://doc.libsodium.org/installation/index.html) (Linux only)
+  
+     - Linux: See [installation](http://doc.libsodium.org/installation/index.html). After installation, make sure the file 'libsodium.so' 
+       exists on: /usr/local/lib or /opt/local/lib. If not, create a symbolic link.
+       
+     - Windows: no installation need (include in binaries) 
+  
+ - Download lastest release of file ucoinj-elasticsearch-X.Y-standalone.zip
  
-## Roadmap
+ - Unzip, then start a elasticsearch node, just do :
+ 
+```bash
+$ unzip ucoinj-elasticsearch-X.Y-standalone.zip
+$ cd ucoinj-elasticsearch-X.Y
+$ ./ucoinj-elasticsearch.sh start index -h <node_host> -p <node_port>
+```
+
+Example on meta_brouzouf test currency :
+
+```bash
+$ ./ucoinj-elasticsearch.sh start index -h  metab.ucoin.io -p 9201
+2016-01-07 23:34:34,771  INFO Starting uCoinj :: ElasticSearch Indexer with arguments [start, index, -h, metab.ucoin.io, -p, 9201]
+2016-01-07 23:34:34,856  INFO Application basedir: /home/user/.ucoinj-elasticsearch
+2016-01-07 23:34:34,861  INFO Starts i18n with locale [fr] at [/home/user/.ucoinj-elasticsearch/data/i18n]
+2016-01-07 23:34:35,683  INFO Starts ElasticSearch node with cluster name [ucoinj-elasticsearch] at [/home/user/.ucoinj-elasticsearch/data].
+*** uCoinj :: Elasticsearch successfully started *** >> To quit, press [Q] or enter
+2016-01-07 23:34:45,015  INFO Indexing last blocks of [meta_brouzouf] from peer [metab.ucoin.io:9201]
+2016-01-07 23:35:01,597  INFO Indexing block #999 / 47144 (2%)...
+2016-01-07 23:35:15,554  INFO Indexing block #1998 / 47144 (4%)...
+2016-01-07 23:35:30,713  INFO Indexing block #2997 / 47144 (6%)...
+2016-01-07 23:35:45,747  INFO Indexing block #3996 / 47144 (8%)...
+...
+2016-01-07 23:45:00,175  INFO All blocks indexed 
+```
+
+Show help :
+
+```bash
+$ ./ucoinj-elasticsearch.sh --help
+
+Usage: ucoinj-elaticsearch.<sh|bat> <commands> [options]
+
+Commands:
+
+ start                            Start elastic search node
+ index                            Index blocks from BMA Node
+ reset-data                       Reset indexed data for the uCoin node's currency
+
 
-Done : 
- - GET request :
-   - /wot/*
+Options:
 
-In progress : 
- - POST request:
-   - /wot/add
+ --help                           Output usage information
+ -h --host <user>                          uCoin node host (with Basic Merkled API)
+ -p --port <pwd>                           uCoin node port (with Basic Merkled API)
+
+ -esh  --es-host <user>           ElasticSearch node host
+ -esp  --es-port <pwd>            ElasticSearch node port
+
+```
+
+
+## Compile
+ 
+ Install required dependencies:
+ 
+  - Install Java JDK (8 or more) 
+  
+  - Install [libsodium](http://doc.libsodium.org/installation/index.html)
+ 
+    - Linux: after [installation](http://doc.libsodium.org/installation/index.html), make sure the file 'libsodium.so' exists on: /usr/local/lib or /opt/local/lib.
+      If not, create a symbolic link.
+ 
+    - Windows: copy the file 'sodium.dll' into directory 'ucoinj-core/lib/'
+ 
+  - Install [Maven 3](http://maven.apache.org/).
  
-What TODO Next ?
-  - /blockchain
-  - /network
+ Get the source code, then compile using Maven:
+  
+```bash
+$ mvn install
+```
+ 
+ To package binaries :
+
+```bash
+$ mvn install -DperformRelase
+```
 
+## Roadmap
 
+ - Detect blockchain rollback
+ 
+ - Allow to store data in embedded database (SQLLite or HsqlDB) 
+ 
+ - Refactor to only use HTML + JS in UI (remove wicket dependencies)