Add spy.notCalled to documentation
Add spy.notCalled to documentation

Fix issue #969 and add spy.notCalled to docs

jishi/sinon,jishi/sinon,fatso83/Sinon.JS,fatso83/Sinon.JS,andpor/sinon,fatso83/Sinon.JS,Khan/Sinon.JS,mroderick/Sinon.JS,andpor/sinon,andpor/sinon,cjohansen/Sinon.JS,cjohansen/Sinon.JS,cjohansen/Sinon.JS,mroderick/Sinon.JS,jishi/sinon,mroderick/Sinon.JS,Khan/Sinon.JS,Khan/Sinon.JS