[Pipet Devel] more changes to web page

[J.W. Bizzaro]

I further modified the web page so that there is one page per topic/section. 
And I included dLoo's grey paper on Piper as an introduction.

    http://bioinformatics.org/piper

Cheers.
Jeff
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                      |           J.W. Bizzaro           |
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                      | http://bioinformatics.org/~jeff/ |
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                      |        BIOINFORMATICS.ORG        |
                      |           The Open Lab           |
                      |                                  |
                      |    http://bioinformatics.org/    |
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