Update README.md

README.md

@@ -4,10 +4,26 @@
 
 Another localisation packet protocol to send/receive localisation data over networks.
 
+LocaPack enables the transport of:
+- universal GNSS localisation coordonates,
+- locally referenced localisations, such as indoor environments, with automatic mapping of coordonates in a universal GNSS translation,
+- inter-node proximity informations such as ranging data
+ 
+Several implementations are available: 
+- Embedded: C++ class (Arduino)
+- Infrastrucure/IoT: Node-RED palette
+- Portable: python
+
+A Json description of the messages.
+
 ## Implementation
 
 ### Arduino
 
+Load the LocaPack library and start with one of the examples:
+
+- tinygpsplus.ino: Make universal GNSS pakets with data from a hardware GPS receiver connected to the `Serial1` port
+
 ### Node-RED
 
 ![Drag Racing](nodered/node-red-flow-example.png)