Hi Anil,
May be of use, but it looks like the 7.5 documentation has significant updates about extending the Fiori Launchpad: http://help.sap.com/saphelp_nw75/helpdata/en/56/e9328978954c77946b75c0976f221c/content.htm?frameset=/en/d5/8602924af34fc3816d44ddb6a9e911/frameset.htm¤t_toc=/en/bd/e12a271f0647e799b338574cda0808/plain.htm&node_id=130&show_children=false
Cheers,
Matt
