Switch to using Accept header rather than Content-Type
Switch to using Accept header rather than Content-Type

Reviewers: applmak

Reviewed By: applmak

Differential Revision: http://d.sil.as/D87

bsimser/rise-to-power,bsimser/rise-to-power,bsimser/rise-to-power,bsimser/rise-to-power,bsimser/rise-to-power