update README

README.md

+# A||GO python library 
+
+
+## Description
+AllGo is a SaaS (Software as a Service) platform provided by Inria. It may be seen as a virtual showroom of technonogies developed by research teams.
+First follow https://allgo.inria.fr/users/sign_up to create an account on AllGo (anyone may create such an account). Once your account creation is confirmed, please connect to https://allgo.inria.fr to obtain your private token, which will allow yo to use the AllGo REST API. You will need this token later (cf. §3 below).
+
+## Install 
+
+``` 
+  pip install allgo
+``` 
+
+
+## Usage 
+
+###Create a app : 
+``` 
+  app = allgo.App('ndsafir', token="ead123baaef55412") 
+```
+
+NB: token in optional, if you already provide your token with an env variable ALLGO_TOKEN or create a file ~/.allgo_token (without breakline)
+
+###Submit a job : 
+
+```
+  files = {'files[0]': open('tmp.png', 'rb')}
+  params = '-nopeaks 1 -2dt false -noise 0 -p 1 -bits 8 -iter 5 -adapt 0'
+  app.run(files=files, params=params)
+```
+
+run is blocking, when finish all files produce by A||Go are download in the current directory 
+
+
+## Example : 
+
+[https://gitlab.inria.fr/allgo/notebooks/ndsafir](https://gitlab.inria.fr/allgo/notebooks/ndsafir)
+  	
+
+
+