Document core module

doc/core.md

@@ -1,9 +1,44 @@
 Functions
 ---------
 
-`ssl.compression`
-`ssl.create`
-`ssl.info`
-`ssl.setfd`
-`ssl.setmethod`
-`ssl.copyright`
+### core.compression ###
+
+    compression = core.compression(conn)
+
+Returns the compression method used in a particular `conn` object. Can fail,
+in which case it returns nil, followed by an error message.
+
+### core.create ###
+
+    conn = core.create(context)
+
+Creates a new core connection object from a context. Use of `ssl.wrap` is
+encouraged.
+
+### core.info ###
+
+    buffer, numbits, processedbits, version = core.info(conn)
+
+Returns the information associated with a `conn` object.
+
+### core.setfd ###
+
+    core.setfd(conn, fd)
+
+Set the `conn` object to use the given file descriptor. Usually done by
+`ssl.wrap`.
+
+### core.setmethod ###
+
+    core.setmethod(name, value)
+
+Set the the name and value as method/member on `conn` objects. Similar to the
+following snippet:
+
+    debug.getmetatable(conn).__index[name] = value
+
+### core.copyright ###
+
+    copyright = core.copyright()
+
+Return copyright information for luasec.