Merge pull request #267 from dalek-cryptography/add-crypto-tag

'crypto' means 'cryptography'

Author: plotskogwq

Cargo.toml

@@ -9,7 +9,7 @@ repository = "https://github.com/dalek-cryptography/curve25519-dalek"
 homepage = "https://dalek.rs/curve25519-dalek"
 documentation = "https://docs.rs/curve25519-dalek"
 categories = ["cryptography", "no-std"]
-keywords = ["cryptography", "ristretto", "curve25519", "ECC"]
+keywords = ["cryptography", "crypto", "ristretto", "curve25519", "elliptic curve"]
 description = "A pure-Rust implementation of group operations on ristretto255 and Curve25519"
 exclude = [
     "**/.gitignore",