Allow indifferent access for the data hash

This only lets the data has be accessed via [] with both string and
symbol keys. Other methods to access the data may not work.
Merge pull request #10 from 25-ventures/feature/data-indifferent-access

Allow indifferent access for the data hash
keyword arguments are a little silly for single params
Update Pipedrive to use the latest interface

Pipedrive makes no distinction between leads and contacts.
Merge pull request #11 from 25-ventures/update/pipedrive

Pipedrive interface compliance
[github] Basic version
[github] Add open issues and closed issues
[github] Add specs
[github] Move octokit to gemspec
[github] Move octokit to service specific dependencies
[github] Update service to new interface
[github] HoundCI compliance
[github] Raise exception when repo is not found
[github] Filter by period
[github] HoundCI compliance