added file rdf
Merge pull request #48 from alejandrofcarrera/master

Assignment 2 Completed. However, there are some aspects that you need to consider, such as the fact that the URIs that you have provided for measurements, sensors, etc., may suggest that you are defining classes instead of resources/individuals, what is wrong. I suggest you rename them.
Merge remote-tracking branch 'upstream/master'
Merge pull request #49 from n-lopez/master

added file rdf