HTTP2.md: mention libressl and boringssl too

diff --git a/docs/HTTP2.md b/docs/HTTP2.md
index 6fc3e49c840f10dde0a7a83c1a4ba91549996180..81b3d5e216a5b39dda40ea00fa7741c8eb13152b 100644 (file)
--- a/docs/HTTP2.md
+++ b/docs/HTTP2.md
@@ -7,8 +7,8 @@ HTTP/2 with curl
 Build prerequisites
 -------------------
   - nghttp2
-  - OpenSSL, NSS, GnutTLS, mbedTLS, wolfSSL or SChannel with a new enough
-    version.
+  - OpenSSL, libressl, BoringSSL, NSS, GnutTLS, mbedTLS, wolfSSL or SChannel
+    with a new enough version.
 
 [nghttp2](https://nghttp2.org/)
 -------------------------------
@@ -52,15 +52,17 @@ SSL libs
 --------
 
 The challenge is the ALPN and NPN support and all our different SSL
-backends. You may need a fairly updated SSL library version for it to
-provide the necessary TLS features. Right now we support:
-
-  - OpenSSL:  ALPN and NPN
-  - NSS:      ALPN and NPN
-  - GnuTLS:   ALPN
-  - mbedTLS:  ALPN
-  - SChannel: ALPN
-  - wolfSSL:  ALPN
+backends. You may need a fairly updated SSL library version for it to provide
+the necessary TLS features. Right now we support:
+
+  - OpenSSL:   ALPN and NPN
+  - libressl:  ALPN and NPN
+  - BoringSSL: ALPN and NPN
+  - NSS:       ALPN and NPN
+  - GnuTLS:    ALPN
+  - mbedTLS:   ALPN
+  - SChannel:  ALPN
+  - wolfSSL:   ALPN
 
 Multiplexing
 ------------