Changed title text, added small detail, needs to be expanded.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/eventstudies@265 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Added proper links inside seealso section, changed description a bit.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/eventstudies@266 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Minor change in language, added lm in see also section.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/eventstudies@267 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Changed title, added fixme.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/eventstudies@268 edb9625f-4e0d-4859-8d74-9fd3b1da38cb