writeRepositoryHtml: Write package descriptions and a repository index as HTML
In biocViews: Categorized views of R package repositories

This function generates an HTML file for each package in a repository and generates an index.html file that provides an alphabetized listing of the packages.

writeRepositoryHtml(reposRoot, title, reposUrl = "..", viewUrl = "../..",
                    reposFullUrl=reposUrl, downloadStatsUrl="",
                    devHistoryUrl="", link.rel = TRUE,
                    backgroundColor="transparent")

`reposRoot`	string specifying the path to the root of the CRAN-style package repository.
`title`	string giving the title for the repository
`reposUrl`	string giving the prefix for URL in links generated on the package description pages. The default is `"..."` which works well if the package description HTML files are written to an `html` subdirectory under the root of the repository.
`viewUrl`	string giving the prefix for the URL in links to the view pages. The biocViews terms will be linked to views summary pages with this prefix.
`reposFullUrl`	string giving the full prefix for URL in links generated on the package description pages. The default is `reposUrl`.
`downloadStatsUrl`	string giving the prefix for the URL in links to the download history statistics pages.
`devHistoryUrl`	string giving the prefix for the URL in links to the development changelog.
`link.rel`	logical indicating whether the index page should generate relative URL links. The default is `TRUE`. If you are generating HTML for a remote repository, you will want to set this to `FALSE`.
`backgroundColor`	A character vector giving the background color for the body in the CSS file.