update documentation

Author: marcobarilari

docs/functions_description.md

@@ -10,7 +10,7 @@
 	* 1.6. [eyeTracker](#eyeTracker)
 	* 1.7. [standByScreen](#standByScreen)
 	* 1.8. [waitForTrigger](#waitForTrigger)
-	* 1.9  [readOutputFilter](#readOutputFilter)
+	* 1.9  [readAndFilterLogfile](#readAndFilterLogfile)
 * 2. [Keyboard functions: response collection and aborting experiment](#Keyboardfunctions:responsecollectionandabortingexperiment)
 	* 2.1. [testKeyboards](#testKeyboards)
 	* 2.2. [getResponse](#getResponse)
@@ -74,9 +74,9 @@ It shows a basic one-page instruction stored in `cfg.task.instruction` and wait
 Counts a certain number of triggers coming from the mri/scanner before returning.
 Requires number of triggers to wait for.
 
-### 1.9 <a name='readOutputFilter'></a>readOutputFilter
+### 1.9 <a name='readAndFilterLogfile'></a>readAndFilterLogfile
 
-At the end of your experiment will display in the command window part of the `*events.tsv` file filterd by an element (e.g. 'trigger').
+Displays in the command window part of the `*events.tsv` file filterd by an element (e.g. 'trigger'). It can take the last output produced (through `cfg`) or any output BIDS compatible (through file path).
 
 ##  2. <a name='Keyboardfunctions:responsecollectionandabortingexperiment'></a>Keyboard functions: response collection and aborting experiment