Link to https version of website in readme

README.md

@@ -1,6 +1,6 @@
 # prosemirror
 
-[ [**WEBSITE**](http://prosemirror.net) | [**ISSUES**](https://github.com/prosemirror/prosemirror/issues) | [**FORUM**](https://discuss.prosemirror.net) | [**GITTER**](https://gitter.im/ProseMirror/prosemirror) ]
+[ [**WEBSITE**](https://prosemirror.net) | [**ISSUES**](https://github.com/prosemirror/prosemirror/issues) | [**FORUM**](https://discuss.prosemirror.net) | [**GITTER**](https://gitter.im/ProseMirror/prosemirror) ]
 
 ProseMirror is a well-behaved rich semantic content editor based on
 contentEditable, with support for collaborative editing and custom
@@ -11,9 +11,9 @@ The ProseMirror library consists of a number of separate
 serves as a central issue tracker, and holds a script to help easily
 check out all the core modules for development.
 
-The [project page](http://prosemirror.net) has more information, a
-number of [examples](http://prosemirror.net/examples/) and the
-[documentation](http://prosemirror.net/docs/).
+The [project page](https://prosemirror.net) has more information, a
+number of [examples](https://prosemirror.net/examples/) and the
+[documentation](https://prosemirror.net/docs/).
 
 This code is released under an
 [MIT license](https://github.com/prosemirror/prosemirror/tree/master/LICENSE).