[DAS2] DAS intro

[Andrew Dalke]

Steve:
> How about this for the first line:
>
>   DAS is a protocol for sharing biological data.
>
> No need to limit it to version 2. This applies to all versions. Use 
> 'DAS/2'
> when talking about new features in this version, such as writeback.

Done.  Made a few changes to the CVS intro text to reduce the use
of "DAS/2".  So that email I just sent is out of date.  :)

					Andrew
					dalke at dalkescientific.com