add latest unirest, re-add nsp check

[bobjflong]

No description provided.

[RuairiK]

🚢

[jeffandersen]

@RuairiK @bobjflong is this going to be released on NPM?

npm install of 2.8.0 (latest) is pulling unirest@^0.4.2, which contains the nsp-flagged vulnerability.

node v4.4.7 / npm 2.15.8

> npm install --save intercom-client
intercom-client@2.8.0 node_modules/intercom-client
├── bluebird@3.4.1
└── unirest@0.4.2 (mime@1.2.11, form-data@0.2.0, request@2.51.0)