* Add contracts to GenesisConfig in demo-runtime

* Update roots.

* Timestamp docs

* Add missing /

* Remove PoC-1 back-compat hacks

* Fix lingering Keccak references

* More keccak exorcism

* Fix test

* Final fixes

* Introduce `impl_event!` for declaring the Event/RawEvent for a module

* Implements a function for generating the event json metadata

* Update runtime `json_metadata` to include the new event json metadata

* Switch to `impl_event!` for new modules

* Remove unused module declaration in `impl_event!`

* Rename `impl_event!` to `decl_event!`

* Fixes some style nits

* Improve doc

- convert some md to adoc
- include contrib docs to the main readme
- add readme for some packages and include them

* Bring changes from 68f83a25 into the replacing adoc file

* Minor fixes

* Remove files irrelevant for substrate

* Remove old polkadot related doc

* Fix minting to do what it's meant to.

* Fix tests

* Note and fix total issuance.

* Undo last non-fix.

* More doc

* Initial bits

* More stuff

* Cleave voting from council

* More events

* Rearrange council a little

* Fix demo

* More info in events

* Introduce data and salt into ContractAddressFor

* Accept salt arg in ext_create.

* Integrate contracts into the demo runtime

* Make libcontract compile to wasm

* Remove salt parameter.

This now is concern of userspace.

* Rebuild binaries.

* DigestItem v4

* tests

* wording

* Adds `impl_json_metadata!` for generating all metadata of a runtime

* Adds `json_metadata` RPC call

* Adds simple test for the `json_metadata` RPC call

* Implements json metadata in the demo runtime

* Fix indent

* Adds missing copyright headers

* Dispatch json metadata renamings and improvements

* Replaces `format!` & `String` with `Vec<JSONMetadata`

* Implements `Encode` and `Decode` for JSONMetadata

* Make `impl_json_metadata!` compileable on `no_std`

* Adapt the client to decode the correct type for `json_metadata`

* Fixes compile error and warning

* Whitespace

* Updating substrate-demo

* Consenus fixes

* Reverted toolchain change

* Adjusted timeout formula

* Simplfied proposal creation

* Fixed tests

* Fixed a few small issues

* 2017->2018

* Style

* More style

* Renamed demo executable to substrate

* Style

* Fixed compilation after merge

* Style