Upgrade of Roxygen2 documentation after release of version 4.0. Use of deprecated @S3method avoided.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/multdiff@112 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Correction of documentation.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/multdiff@113 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
NAMESPACE reflects changes in Roxygen2 documentation.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/multdiff@114 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
New stepwise optimization function 'stepOptim' implementated. The 'fit' function updated to be able to call 'stepOptim'. Bugs in 'grad' corrected. Corrections of documentation. Upgrade to version 0.3.1.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/multdiff@115 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Corrections of documentation.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/multdiff@116 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Ignore pattern.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/multdiff@117 edb9625f-4e0d-4859-8d74-9fd3b1da38cb