example and updated python bindings

docs/src/pyexamples.rst

@@ -134,4 +134,35 @@ hang around until the main process exits.
         time.sleep(0.1)
 
     #Join the process
-    p.join()
+    p.join()
+
+
+------------------------------
+Setting and getting times
+------------------------------
+
+::
+
+    import datetime as dt
+    from slsdet import Detector
+
+    d = Detector()
+
+    # The simplest way is to set the exposure time in 
+    # seconds by using the exptime property
+    # This sets the exposure time for all modules
+    d.exptime = 0.5
+
+    # exptime also accepts a python datetime.timedelta
+    # which can be used to set the time in almost any unit
+
+    t = dt.timedelta(milliseconds = 2.3)
+    d.exptime = t
+
+    # or combination of units
+    t = dt.timedelta(minutes = 3, seconds = 1.23)
+    d.exptime = t
+
+    #exptime however always returns the time in seconds
+    >>> d.exptime
+    181.23