Add categories and keywords

Author: IvanUkhov

Cargo.toml

@@ -10,6 +10,8 @@ authors = [
 description = "The package provides BLAS and LAPACK using the Netlib implementation."
 homepage = "https://github.com/cmr/netlib-src"
 repository = "https://github.com/cmr/netlib-src"
+categories = ["science"]
+keywords = ["linear-algebra"]
 build = "build.rs"
 links = "blas"
 exclude = [