added wait-micros function

docs/reference/control/wait-micros.md

@@ -0,0 +1,32 @@
+# WaitMicros
+
+Blocks the current fiber for the given amount of micro-seconds.
+
+```sig
+control.waitMicros(4)
+```
+
+### Example
+
+This program sends a 10 micro-second HIGH pulse through pin ``P0``. 
+
+```blocks
+// ensure pin is low to send a clean pulse
+pins.digitalWritePin(DigitalPin.P0, 0)
+control.waitMicros(2)
+// set pin to 1 and wait 10 micros
+pins.digitalWritePin(DigitalPin.P0, 1)
+control.waitMicros(10)
+// finish pulse
+pins.digitalWritePin(DigitalPin.P0, 0)
+```
+
+#### ~hint
+
+This function is not supported in the simulator.
+
+#### ~
+
+### See Also
+
+[pause](/reference/basic/pause)