Update required software documentation with video walkthroughs related to PostgreSQL and documentation of required software for the Phidgets 1048

docs/documentation/requiredsoftware.html

 				<h3>Optional: Setting up a Database and User Role</h3>
 				
 				<p>The PostgreSQL installer will set up a user role called
-				<tt>postgres</tt> and a database called <postgres>. The
+				<tt>postgres</tt> and a database called <tt>postgres</tt>. The
 				<tt>postgres</tt> user has full access to all features of the
 				database and Typica does not require that. If you are using
 				PostgreSQL for other purposes you may also want to give Typica
 				<a href="http://www.postgresql.org/docs/9.2/static/index.html">
 				PostgreSQL documentation</a>.
 				
+				<p>The following two videos might be helpful. One provides a walkthrough of installing PostgreSQL on either Mac OS X or Windows. The other covers upgrading from an older version of PostgreSQL to a newer one.</p>
+				
+				<iframe width="640" height="360" src="https://www.youtube.com/embed/tO4A4vaSen8" frameborder="0" allowfullscreen></iframe>
+				
+				<iframe width="640" height="360" src="https://www.youtube.com/embed/qGVb3J5y3nw" frameborder="0" allowfullscreen></iframe>
+				
 				<h2>Hardware Communications Software</h2>
 				
 				<p>The software that you need to communicate with your data
 				acquisition hardware depends on what hardware you intend to use.</p>
 				
+				<h3>Phidgets 1048</h3>
+				
+				<p>The Phidgets 1048 requires the <a href="http://www.phidgets.com/docs/Operating_System_Support">drivers and libraries download available from the manufacturer</a>. This is tested as working with Typica on Mac OS X, Windows, and Linux.</p>
+				
 				<h3>Software for Modbus RTU device support</h3>
 				
 				<p>No additional software is strictly required for devices that