Update deps and remove reliance on crossbeam

[hashgood] / README.md

diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -17,6 +17,16 @@ Read the MD5, SHA1 or SHA256 hash from:
 
 This program arose from dissatisfaction with the [workarounds required for traditional tools](https://thomask.sdf.org/blog/2019/05/05/techniques-for-verifying-shasums-conveniently.html).
 
+## Installing
+
+If you have a working Rust toolchain you can install `hashgood` from crates.io:
+
+```
+cargo install hashgood --features paste
+```
+
+Pre-compiled binaries for common platforms can be downloaded [from the releases page](https://github.com/thombles/hashgood/releases). Otherwise you can build it yourself; see the next section.
+
 ## Compiling
 
 `hashgood` targets stable Rust. With a Rust toolchain installed, clone the repository and run: