Update README.md

parse_results/README.md

 This folder contains the script to parse the log files and plot the results used in the paper
+
+The create-csv combines the results from the experiments performed for the paper into one ping.csv file and timestamp.csv file. 
+
+An example of the timestamp.csv file is as follows
+```
+Location,Technology,ts_relay,ts_client
+University,Ethernet ,1613572318.291011,1613572318.292422
+...
+```
+The ts_relay denoted the timestamp of the MQTT message at the relay and ts_client is the corresponding timestamp at the client. 
+
+An example of the ping.csv file is as follows
+```
+Location,Technology,rtt
+University,Ethernet ,2.12
+University,Ethernet ,1.24
+```
+The rtt denotes the RTT reported by ping for a given location and technology.