Update README

README.md

@@ -10,6 +10,10 @@ Phraseanet 4.1 - Digital Asset Management application
  - Elasticsearch search engine
  - Multiple resolution assets generation
 
+# License :
+
+Phraseanet is licensed under GPL-v3 license.
+
 # Documentation :
 
 https://docs.phraseanet.com/
@@ -31,17 +35,22 @@ https://www.phraseanet.com/download/
 # Development :
 
 For development purpose Phraseanet is shipped with ready to use development environments using vagrant.
+You can easily choose betweeen a complete build or a prebuild box, with a specific PHP version.
 
-- git clone
-- vagrant up
+    git clone
+    vagrant up --provision
+
+then, a prompt allow you to choose PHP version, and another one to choose a complete build or an Alchemy prebuilt boxes.
+
+Ex:
+- vagrant up --provision  //// 5.6 ///// 1  >> Build an ubuntu/xenial box with php5.6
+- vagrant up --provision  //// 7.0 ///// 1  >> Build an ubuntu/xenial with php7.0
+- vagrant up --provision  //// 7.2 ///// 2  >> Build the alchemy/phraseanet-php-7.2 box
+- vagrant up --provision  //// 5.6 ///// 1  >> Build the alchemy/phraseanet-php-5.6 box
 
 
 For development with Phraseanet API see https://docs.phraseanet.com/4.0/en/Devel/index.html
 
-# License :
-
-Phraseanet is licensed under GPL-v3 license.
-
 
 # Docker build