Removing Dumpfile code and other SVN output.
Revert "Added GitAction table."

This reverts commit 469d835ef88b68ca916a3a6a935671e3e4a62323.
Changed IMPORTSVN to IMPORTGIT.
Added more realistic documentation now that I've gotten it working a little.
Updated documentation.
Quietly checkout branches.
Add directories correctly.
Changed message.
Fix parents getting removed by 'git rm'.