Added @lgray as a watcher

He watches 
RecoEcal/*
RecoEgamma/*
RecoParticleFlow/*
DataFormats/ParticleFlowReco
DataFormats/ParticleFlowCandidate
DataFormats/EgammaCandidate
DataFormats/EgammaReco
Merge pull request #47 from nclopezo/patch-7

Added @lgray as a watcher