Set up a Cargo workspace

Cargo.toml

@@ -0,0 +1,9 @@
+[workspace]
+members = [
+    "librustzcash",
+]
+
+[profile.release]
+lto = true
+panic = 'abort'
+codegen-units = 1

README.md

@@ -0,0 +1,24 @@
+# Zcash Rust crates
+
+This repository contains a (work-in-progress) set of Rust crates for
+working with Zcash.
+
+## Security Warnings
+
+These libraries are currently under development and have not been fully-reviewed.
+
+## License
+
+All code in this workspace is licensed under either of
+
+ * Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+ * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+
+at your option.
+
+### Contribution
+
+Unless you explicitly state otherwise, any contribution intentionally
+submitted for inclusion in the work by you, as defined in the Apache-2.0
+license, shall be dual licensed as above, without any additional terms or
+conditions.

librustzcash/Cargo.toml

@@ -28,8 +28,3 @@ rev = "7a5b5fc99ae483a0043db7547fb79a6fa44b88a9"
 [dependencies.sapling-crypto]
 git = "https://github.com/zcash-hackworks/sapling-crypto"
 rev = "21084bde2019c04bd34208e63c3560fe2c02fb0e"
-
-[profile.release]
-lto = true
-panic = 'abort'
-codegen-units = 1