Final tweaks for PoC-2 runtime upgrade (#348)

* Final tweaks for PoC-2 runtime upgrade

* Address grumble

* Avoid slow wasm

* New poc-2-era bootnodes

* Fix warning

* Typo

* Fix for allocation in wasm

* Fix & runtimes.

* PoC-1 should be default.

* Name testnet Krumme Lanke, update README

* YML update

* Use the right port

substrate/demo/runtime/wasm/Cargo.lock

@@ -847,6 +847,7 @@ name = "substrate-runtime-primitives"
 version = "0.1.0"
 dependencies = [
  "integer-sqrt 0.1.0 (git+https://github.com/paritytech/integer-sqrt-rs.git)",
+ "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.64 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.64 (registry+https://github.com/rust-lang/crates.io-index)",