Country filter

[braj008]

Is your feature request related to a problem? Please describe.
I cannot restrict the search to a specific country. I would like to restrict the search to India as other country results are of no use to me

Describe the solution you'd like
We have setCountry(...) in default AutocompleteSupportFragment so it would be nice to have that feature in this library as well

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.