Log Message:
-----------
Improve docs about installation.
Modified Files:
--------------
textsearch_senna/doc:
textsearch_senna.html (r1.5 -> r1.6)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/textsearch-ja/textsearch_senna/doc/textsearch_senna.html?r1=1.5&r2=1.6)