documentation mentions shade-tb for background, but package requests shadeTB

[GoogleCodeExporter]

What steps will reproduce the problem?
1. make a poster that should have a shaded background
2. put background=shade-tb as specified in the documentation and specify the 
bgColor{One,Two}
3. compile with pdflatex, first error doesn't say much, press <Enter> and the 
second error says that shadeTB is needed instead

What is the expected output? What do you see instead?
The PDF documentation (baposter_guide.pdf, both in tar and as a sole download) 
mentions only shade-{tb,lr}

What version of the product are you using? On what operating system?
Gentoo amd64, texlive 2010, downloaded the tar a few hours ago (2012-01-30)

Please provide any additional information below.
I love what you've done, we've already used this class for several conferences. 
I just remembered that last summer it was still shade-tb, don't know when that 
changed.

This bug is only a modest way to say thanks :)

Original issue reported on code.google.com by ondrej.g...@gmail.com on 30 Jan 2012 at 3:17

[GoogleCodeExporter]

I think this is due to the documentation not incorporating all the changes from 
the update on 15. September 2011.

Another issue with the documentation is that it still e.g. says 
"grid={yes|no}", whereas it should now be "grid={true|false}".

Original comment by Stephan....@googlemail.com on 12 Sep 2012 at 1:41