Add travis-ci build status image
Bump webmachine version to 1.10.5
piqi-rpc v0.7.0 release
travis-ci: build on R16B01, R16B02 OTP releases
Rename service option: json_omit_null_fields -> json_omit_missing_fields

... to better reflect the purpose.

The change is backward compatible as the old name is still accepted.
Add callback spec generation in _rpc.erl modules

This adds `-callback` specs to the `_rpc.erl` modules for Erlang R15B+.

The spec printing is unified for `-spec` and `-callback` specs (and also
slightly prettified).
Merge pull request #2 from yfyf/callback_specs

Add callback spec generation in _rpc.erl modules
Add Ignas Vyšniauskas to THANKS
Accept Piq as input when Content-Type is "text/plain"

Also, make sure frameless Piq is processed correctly. The one case that needs to
be handled specially is when the body is empty.
Merge remote-tracking branch 'anton/master' into bump_piqi_rpc_version

Conflicts:
	rebar.config
	src/piqi_rpc_webmachine_resource.erl
Merge pull request #10 from yfyf/bump_piqi_rpc_version

Sync with upstream, part 2