vicky you should install new osx 10.10.1 Hackintosh zone . and during installation only check the following options in customization tab:
IGPEnabler=yes (its for intel HD don't enable "GraphicsEnabler").
ahciinjector(to show internal drives).
SMBios to macbook pro 8,1
only use NullCpuPowerManagement and uncheck the Disabler option which has been checked by default.
uncheck networking and Audio kexts for now you can install it via multibeast post installation so don't worry.
i don't remember the exact option but it would be like " waitforerror" check that it is very important else you will be stuck at loading screen.
install . don't use any flags wait 5-10 mins it will load into osx yosemite . the graphics would be lagy so don't worry . use intel HD 1gen 10.10 kext from hackintosh zone , google it you will find it easily, after that use kext wizard or kext utility pre download it somewhere before installation , so that you can easily use after . now extract the intel HD yosemite .zip and there would be some kexts and a folder framebuffer drag all kexts except framebuffer folder onto the kext utility windows , let it install after that open frambuffer -> singlelink-> alternate lw+vga1->appleintelhdfb.kext drag that and install via kextutility restart and you will have the QE/CI graphics enabled , your dock will be transparent and also , vram would be 288mb which was 3mb . before enjoy ! use universal 0.2 kext for Audio,from multibeast.