Add .readme to the root workspace (#575)

Author: newpavlov

.gitignore

@@ -1,5 +1,3 @@
 /target/
-/.readme/target/
 /benches/target/
 **/Cargo.lock
-

.readme/Cargo.lock

@@ -1,5 +1,3 @@
-workspace.members = ["."]
-
 [package]
 name = "readme"
 description = "rustdoc tests for toplevel README.md"
@@ -12,11 +10,3 @@ password-hash = "0.6.0-rc.0"
 argon2 = { path = "../argon2" }
 pbkdf2 = { path = "../pbkdf2", features = ["simple"] }
 scrypt = { path = "../scrypt" }
-
-[patch.crates-io]
-password-hash = { git = "https://github.com/RustCrypto/traits.git" }
-
-blake2   = { git = "https://github.com/RustCrypto/hashes.git" }
-sha2     = { git = "https://github.com/RustCrypto/hashes.git" }
-
-hmac = { git = "https://github.com/RustCrypto/MACs.git" }

.readme/Cargo.toml

@@ -1,6 +1,7 @@
 [workspace]
 resolver = "2"
 members = [
+    ".readme",
     "argon2",
     "balloon-hash",
     "bcrypt-pbkdf",