added link to a book in README
added link to a book in README

RonFIX/internet,dulichan/kart-slide,StridersGonnaStride/myimpress,KathyReid/osdc-2015-presentation,StridersGonnaStride/impress.js2,j2lb/Algo_Impress.js,iblancasa/BackendSI2-IV-slides,impress/impress.js,henrikingo/impress.js,StridersGonnaStride/myimpress,StridersGonnaStride/impress.js2,henrikingo/impress.js,arkegeomatica/presentaciones,arkegeomatica/presentaciones,RonFIX/internet,j2lb/Algo_Impress.js,dulichan/kart-slide,impress/impress.js,KathyReid/osdc-2015-presentation,schalkneethling/mozsa-jhb-opening