Merge pull request #2 from tel/dev-new-client

Dev new client
Merge branch 'master' of github.com:tel/oauthenticated
Merge pull request #5 from ibotty/master

"port to aeson 0.7": This looks great.
Added pctEncoding to OAuth Header values

Previously, without encoding, things such as tailing '=' on base64 encodings
would pass through and cause auth failures.

This also suggests the need for a type-level solution to encoding.

Resolves #6
Version bump
Changes for exceptions-0.4.
Merge pull request #9 from benmos/exceptions-0.4

Changes for exceptions-0.4.
don't sign body when not form-urlencoded