README update for postgres performance tuning
README update for postgres performance tuning

yantrabuddhi/atomspace,AmeBel/atomspace,ArvinPan/atomspace,yantrabuddhi/atomspace,misgeatgit/atomspace,rTreutlein/atomspace,AmeBel/atomspace,rTreutlein/atomspace,ArvinPan/atomspace,yantrabuddhi/atomspace,inflector/atomspace,inflector/atomspace,misgeatgit/atomspace,misgeatgit/atomspace,rTreutlein/atomspace,rTreutlein/atomspace,inflector/atomspace,rTreutlein/atomspace,AmeBel/atomspace,AmeBel/atomspace,AmeBel/atomspace,ArvinPan/atomspace,yantrabuddhi/atomspace,yantrabuddhi/atomspace,ArvinPan/atomspace,misgeatgit/atomspace,inflector/atomspace,inflector/atomspace,misgeatgit/atomspace