MINOR: lua: add "now" time function
This function returns the current time in the Lua.
diff --git a/doc/lua-api/index.rst b/doc/lua-api/index.rst
index 7a1f44e..d41451f 100644
--- a/doc/lua-api/index.rst
+++ b/doc/lua-api/index.rst
@@ -270,6 +270,20 @@
:param string filename: the filename that reference the map entries.
:param string key: the key which will be deleted.
+.. js:function:: core.now()
+
+ **context**: body, init, task, action
+
+ This function returns the current time. The time returned is fixed by the
+ HAProxy core and assures than the hour will be monotnic and that the system
+ call 'gettimeofday' will not be called too. The time is refreshed between each
+ Lua execution or resume, so two consecutive call to the function "now" will
+ probably returns the same result.
+
+ :returns: an array which contains two entries "sec" and "usec". "sec"
+ contains the current at the epoch format, and "usec" contains the
+ current microseconds.
+
.. js:function:: core.msleep(milliseconds)
**context**: body, init, task, action