Added pagetoken args to Places, Updated URI

[Akiren]

exports.places has been updated with pagetoken args which is necessary
to get subsequent places as the initial request returns 20, pagetoken
must be passed to get additional places from a location.

Also updated the URI to the new Google places URI as documented here
https://developers.google.com/places/documentation/search, the lat/lon
arguments were also failing on the stringily command which was
converting the +, into ascii hex codes and passed to the created URI

[fabriziomoscon]

@Akiren I preferred to merge first this: #26 since it doesn't break backwards compatibility since the pagetoken parameter is passed at the end.

Could you please:

• integrate the new changes in your fork
• open another pull request with the URL change
• close this one

[fabriziomoscon]

please see #70