Resolve "improve README"

This MR is mostly to propose changes to the edits performed by @mschleiss in #63 (closed).

As most edits were done in the main branch. The Merge Request serves only to add comments and make small edits

README.md

 # Disdrometer data logging software - version 2
 
-{:toc}
+[[_TOC_]]
 
 disdroDLv2 is a Python software for acquiring and storing data from the OTT Parsivel2 optical disdrometer, developed by TU Delft, within the framework of the Ruisdael observatory for atmospheric science. 
 
@@ -101,7 +101,10 @@ terminal two: send commands to serial port `echo -en "CS/L\r" > /dev/ttyUSB0`
 # Authors
 DisdroDLv2 is developed in the context of the [Ruisdael Observatory](https://ruisdael-observatory.nl/) by
 
-* Marc Schleiss (Principal Investigator) m.a.schleiss@tudelft.nl
-* Andre Castro a.i.castro@tudelft.nl
+* Marc Schleiss (Principal Investigator)
+* Andre Castro
 * Mahaut Sourzac 
 * Rob MacKenzie
+
+# License
+GPLv3. See [LICENSE](LICENSE)
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