Updated Readme.md

README.md

 # OssoPI
-OssoPI
+====
+OssoPI RaspberrPI model 1B+ and 2 I/O expansion board support files
+
+OssoPI RaspberrPI model 1B+ and 2 expansion cape with 8 digital (opto-isolated or non-opto-isolated) inputs
+and 8 relays 275VAC@10A.
+
+Osso is shipped with the ability to switch opto-isolated inputs or non-opto-isolated inputs, to better fit user needs.
+Docs about how to change input types are on the [project wiki](https://git.nexlab.net/nexlab/OssoPI/wikis/home)
+
+The expansion board has to be powered by a 12VDC connector (9 to 24VDC supported), and it
+will power the RaspberryPI from expansion pins ( no needs to give external power
+to the RaspberryPI! )
+
+The size of the expansion board is a standard format for 9 units DIN rail mount boxes.
+
+The test files are supposed to run on any linux based os with Rpi.GPIO python library installed,
+tested on Raspbian.
+
+For more infos: 
+http://www.nexlab.net/