Add hello presentation by Felix
unignore hello presetation in folder doc/

	modified:   .gitignore
	new file:   doc/hello.html
remove refenreces to TPOSS from slides

	modified:   doc/hello.html
fix regression in b877b67dac9f3e48f11be59714d48dfcca6e7a9b, add atoms
as strings
fix parsing bug ref #1612
Merge branch 'master' of git.tpip.net:hello
Merge branch 'master' of git.tpip.net:hello
add encoder for timestamps
add .arcconfig
fix common tests

Summary:
several test where broken, but also some logic error in hello where discovered
- JSON RPC 2.0 error return "Id" needs to be null in some cases
- run_binary_request in stateless handler expected wrong return error
- batch request where executed in reverse order, and therefore reply lists where reordered as well
- invalid_response error reply was returned without proper proto_error tag
- tests need build depend on proper

Test Plan: tetrapack test

Reviewers: druss, tbreddin, hsychla

Differential Revision: https://review.tpip.net/D87
keep item ordring in json objects when decoding

Summary:
previosly, the attributes in objects where reversed. this really should
have no impact, since attrbiute ordering is irelevant, however it
turns that enforceing ordering makes testsuites simpler, so i would
suggest to include this.

Test Plan: tetrapak test

Reviewers: tbreddin, druss, kseidens, hsychla

Reviewed By: druss

Differential Revision: https://review.tpip.net/D102
Make Hello work with Cowboy 0.8.x
Make cowboy 0.8 listeners actually work
Fail with reason badmodule if the callback module does not exist at bind time
fix error reason if URL scheme is not supported
Add support for building with rebar
Rename the presentation slides file

hello.html will be overwritten by edoc