Adding structure

Author: fabiomolinar

.github/workflows/ci.yml

@@ -0,0 +1,26 @@
+# Ethernet Powerlink Standard
+
+The Ethernet Powerlink standard can be found at [B&R Automation downloads page](https://www.br-automation.com/en/technologies/powerlink/service-downloads/).
+
+The specification is divided into the following files:
+
+- **POWERLINK Communication Profile Specification**
+  - EPSG 301 V-1-5-1 DS.pdf
+- **Extension specifications**
+  - EPSG 302-A V-1-1-1 DS.pdf
+  - EPSG 302-B V-1-1-1 DS.pdf
+  - EPSG 302-C V-1-1-1 DS.pdf
+  - EPSG 302-D V-1-1-1 DS.pdf
+  - EPSG 302-E V-1-2-1 DS.pdf
+  - EPSG 302-F V-1-0-1 DS.pdf
+- **XML Device Description**
+  - EPSG 311 V-1-2-1 DS.pdf
+  - XML Device Description – Implementation Guidelines V-1-0-2.pdf
+- **Further technical specification**
+  - POWERLINK_Implementation_Directive_for_CiA402_EPSG_V-0-0-4.pdf
+  - EPSG_XML_header_for_firmware_files_V-1-0-0.pdf
+
+An additional companion specification exists related to OPC-UA:
+
+- **OPCUA POWERLINK Companion Specification**
+  - OPCUA POWERLINK Companion Specification RELEASE 1.0.pdf