How to root Lenovo a7000-a_S152_150917_ROW

How to root Lenovo a7000-a_S152_150917_ROW? Pls help! Any genius xda devs out there who can direct me to a step by step procedures on how to root this Phone model. OS is lollipop 5.0 and it consumes 3.+ g of the internal memory. With the latest firmware update 152_150917, option to move apps to sd is has totally gone. Phone becones laggy, due to low memory space. Need this phone rooted so at least i can move those apps to the external memory... pls pls pls,,, help.... Thanks in advance.:angel::angel::(:(