Update README.md
index.html typo fixed.
Merge branch 'refs/heads/master' of https://github.com/bjlee72/IRIS.git
bugfix for the topology where just one switch exists.
property fixed
property file fixed.
Update README.md

typos corrected
Update README.md

Engineer -> Researcher
Merge branch 'master' of https://github.com/bjlee72/IRIS.git