docs(README.md): fix documentation of features (#252)

Author: thomwiggers

README.md

@@ -89,8 +89,9 @@ where feature detection is not functional.
 
 ## Stack usage
 
-Some algorithms use large amounts of stack space. This means that you may need to specify `RUST_MIN_STACK` in your environment.
-This for example affects tests.
+Some algorithms use large amounts of stack space. This means that you may need
+to specify `RUST_MIN_STACK` in your environment. This for example affects
+tests.
 
 ## Algorithm features
 

oqs-sys/README.md

@@ -7,6 +7,7 @@ This crate provides the unsafe `ffi` bindings to [liboqs][].
 
 ## Features
 
+* `vendored` (default): Compile the included version of liboqs instead of linking to the system version.
 * `openssl` (default): Compile with OpenSSL features (mostly symmetric cryptography)
 * `non_portable`: Don't build a portable library.
 * `kems` (default): Compile with all KEMs enabled
@@ -15,16 +16,10 @@ This crate provides the unsafe `ffi` bindings to [liboqs][].
     * `frodokem`
     * `hqc`
     * `kyber`
-    * `ntru`
     * `ntruprime`
-    * `saber`
-    * `sidh`
-    * `sike`
 * `sigs` (default): Compile with all signature schemes enabled
     * `dilithium`
     * `falcon`
-    * `picnic`
-    * `rainbow`
     * `sphincs`: SPHINCS+
 
 [oqs]: https://openquantumsafe.org

oqs/README.md

@@ -10,24 +10,19 @@ For the ``ffi`` interface bindings, see ``oqs-sys``.
 
 ## Features
 
-* `std`: build with `std` support. This adds handly `Display` and `Error` implementations
+* `std`: (default) build with `std` support. This adds handly `Display` and `Error` implementations
   to relevant types. If you want a `#![no_std]` library, disable this feature (and you
   probably want to disable the default features because they pull in OpenSSL through `oqs-sys`).
 * `non_portable`: Don't build a portable library.
+* `vendored`: (default) Controls the `oqs-sys/vendored` feature which enables building the included version of liboqs.
 * `kems` (default): Compile with all KEMs enabled
-    * `bike`  (only on non-Windows)
-    * `classic_mceliece`
-    * `frodokem`
-    * `hqc`
-    * `kyber`
-    * `ntru`
-    * `ntruprime`
-    * `saber`
-    * `sidh`
-    * `sike`
+  * `bike`  (only on non-Windows)
+  * `classic_mceliece`
+  * `frodokem`
+  * `hqc`
+  * `kyber`
+  * `ntruprime`
 * `sigs` (default): Compile with all signature schemes enabled
-    * `dilithium`
-    * `falcon`
-    * `picnic`
-    * `rainbow`
-    * `sphincs`: SPHINCS+
+  * `dilithium`
+  * `falcon`
+  * `sphincs`: SPHINCS+