Updated docs; changed default database to public test db

@Alyx/Alyx.m

@@ -24,7 +24,7 @@
 
   properties
     % URL to the Alyx database
-    BaseURL char = 'https://alyx.cortexlab.net'
+    BaseURL char = 'https://test.alyx.internationalbrainlab.org'
     % Set the local directory for saving queued Alyx commands, create if needed
     QueueDir char = 'C:\localAlyxQueue'
     % Set whether input dialogs should appear, e.g. login window

README.md

@@ -6,7 +6,7 @@ This repository contains a MATLAB class called Alyx, that facilitates RESTful PO
 
 ## Getting started
 
-These instructions are for installing the package and interating with the database from MATLAB.  See deployment for notes on how to deploy the project on a live system.
+Extensive instructions for using this package can be found in `docs/AlyxMatlabPrimer.m`.  See "deployment" for notes on how to deploy the project on a live system.
 
 ### Prerequisites
 Alyx-MALTAB requires MATLAB 2016a or later.  The code and instructions for installing the actual database can be found on the [cortex-lab/Alyx](https://github.com/cortex-lab/Alyx) repository.
@@ -20,6 +20,8 @@ cd alyx-matlab
 savepath(pwd, fullfile(pwd, helpers));
 ```
 
+To customise the database URL create a file called `+dat\paths.m`.  This file should a function with that returns a structure with a field called `databaseURL`.  The value of this field will be the default when a new Alyx object is instantiated.  A template of this paths file can be found [here](https://github.com/cortex-lab/Rigbox/blob/master/docs/setup/paths_template.m).
+
 Once the paths are added you can read the help pages:
 ```
 doc Alyx

docs/AlyxMatlabPrimer.m

@@ -205,6 +205,9 @@
 refs = ["2018-07-13_1_flowers" "2019-08-16_2_ZM_335"];
 [~, eids] = ai.getSessions(refs)
 
+% To convert the other way, use getExpRef:
+refs = ai.getExpRef(eids);
+
 % Sessions can be filtered based on subject, date, or associated dataset
 % types:
 sessions = ai.getSessions('cf264653-2deb-44cb-aa84-89b82507028a', ...
@@ -238,6 +241,19 @@
 % Note: Inputs may be cellstr, char or string.  The first output will be
 % either a char or cellstr.
 
+% File paths may also be retrieved using `Alyx.expFilePath`.  This method
+% allows one to get file paths for a given experiment reference and dataset
+% type:
+help Alyx.expFilePath
+
+ref = '2019-04-11_1_KS005';
+type = 'trials.itiDuration';
+[fullpath, filename] = ai.expFilePath(ref, type);
+
+% As with `dat.expFilePath` a specific repository location may be specified
+% and the method also accepts subject, date and sequence number as separate
+% inputs, instead of an expRef.
+
 %% Saving files
 % Saving files in a standard way can be easily achieved by using
 % dat.expFilePath to return the path and file name for your data.  The main