Update README.md

README.md

 A repository for testing code for the monitor use case
+
+Installation: 
+
+External libraries are used. If not previously installed, run in terminal:
+
+go get github.com/golang/glog
+go get github.com/sparrc/go-ping
+
+Running:
+
+1) go run monitor-fetch.go
+
+Result example:
+56351 nodes read from cnml.xml
+52553 devices read from cnml.xml
+39582 devices exported to /tmp/gmonitor2/devs.json
+
+2) go run monitor-assign.go
+
+3) 
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