the command is "mysqldump database tables" not "mysqldump tables database"
fix broken build, add gem tasks to rake
it's Capistrano::Mysqldump, not the other way around
default mysqldump_bin is `which_mysqldump`
fix all the stuff I broke.
Merge pull request #8 from michaelglass/master

this is like my last pr but I tested everything.  SORRY!