[GRASS5] GRASS 5.1 draft tutorial available

[Markus Neteler]

Dear (potential) GRASS 5.1 testers,

a draft, incomplete GRASS 5.1 tutorial is available now:
http://grass.itc.it/grass51/tutorial/

describing 
 - geometry storage (native, SHAPE, PostGIS) and
 - attributes storage (DBF, mySQL, PostgreSQL, ODBC)
 - some examples