updated README for typo
updated README for typo

There was a typo in the intro paragraph.

codedellemc/rexray,akutz/rexray,codedellemc/rexray,cduchesne/rexray,oppodeldoc/rexray,cduchesne/rexray,clintonskitson/rexray,oppodeldoc/rexray,thecodeteam/rexray,emccode/rexray,oppodeldoc/rexray,codedellemc/rexray,oppodeldoc/rexray,emccode/rexray,ltouati/rexray,clintonskitson/rexray,clintonskitson/rexray,thecodeteam/rexray,ltouati/rexray,clintonskitson/rexray,thecodeteam/rexray,codedellemc/rexray,codedellemc/rexray,akutz/rexray,ltouati/rexray,oppodeldoc/rexray,thecodeteam/rexray,akutz/rexray,oppodeldoc/rexray,cduchesne/rexray,codedellemc/rexray,akutz/rexray,akutz/rexray,cduchesne/rexray,emccode/rexray,thecodeteam/rexray,emccode/rexray,cduchesne/rexray,thecodeteam/rexray,ltouati/rexray,akutz/rexray,cduchesne/rexray