Compile polkadot-runtime both for Wasm ad native, allowing for testing and direct usage.

substrate/wasm-runtime/pwasm-alloc/README.md

@@ -0,0 +1,12 @@
+# pwasm-libc
+
+Parity WASM contracts standard library libc bindings
+
+[Documentation](https://paritytech.github.io/pwasm-std/pwasm_alloc/)
+
+# License
+
+`pwasm_alloc` is primarily distributed under the terms of both the MIT
+license and the Apache License (Version 2.0), at your choice.
+
+See LICENSE-APACHE, and LICENSE-MIT for details.