[Q] how to do USB internet or simple reverse tethering (as in Xiaomi redmi 1s)??? topic

In Xiaomi Redmi 1s & some other phones, i've seen an option in settings as USB internet which simply allows us to use the internet from PC on our phone via USB cable... I know it's possible doing reverse tethering on our phone using terminal emulator & scripts but it's a tedious process. Can anyone make an app or make a setting in our phone to do reverse tethering easy as on above mentioned phones? (i don't have wifi access & 3g costs like hell for unlimited usage here :crying:)