closes #116

closes #70, closes #98

Add grunt-cli and phantomjs dev deps

Added defaults.timeout to default config.

FIX typescript definition to correctly type promise callbacks

return result from callback

allow passing an agent through to node http requests, closes #68

closes #87

for more details see https://remysharp.com/2011/04/21/getting-cors-working

returning the result of the callback allows you to chain the promise
like you would expect

closes #56

closes #57

Fixing dependencies version