Add missing package and fix default password
Add missing package and fix default password

Added the "rack" package to the initial install (on Ubuntu 14.04 it's required) and unified the default password for logging in post install.

dnjo/huginn-spotify-linker,younata/huginn,brianpetro/huginn,darrencauthon/huginn,Ishfal/huginn,ahmadassaf/IFTTT-Plus,dnjo/huginn,TildeWill/huginn,cantino/huginn,dsander/huginn,johnleeming/huginn,jezcope/huginn,breandan/huginn,AdrianoCahete/huginn,breandan/huginn,CodeHunter2006/huginn,jezcope/huginn,cantino/huginn,ashmckenzie/huginn,dnjo/huginn,omniscopeio/huginn,dsander/huginn,dnjo/huginn-spotify-linker,CodeHunter2006/huginn,brianpetro/huginn,TildeWill/huginn,omniscopeio/huginn,naiyt/huginn,brianpetro/huginn,MadBomber/huginn,mathias/huginn,cpretzer/huginn,gautamkrishnar/huginn,megaxox/huginn,naiyt/huginn,ashmckenzie/huginn,younata/huginn,gautamkrishnar/huginn,naiyt/huginn,megaxox/huginn,darrencauthon/huginn,eugenesvk/huginn,albertsun/huginn,djolivier/huginn,Aluxian/huginn,MadBomber/huginn,ahmadassaf/IFTTT-Plus,djolivier/huginn,darrencauthon/huginn,huginn/huginn,djolivier/huginn,jezcope/huginn,strugee/huginn,CodeHunter2006/huginn,huginn/huginn,eugenesvk/huginn,virtadpt/huginn,megaxox/huginn,omniscopeio/huginn,johnleeming/huginn,dsander/huginn,Ishfal/huginn,MadBomber/huginn,cpretzer/huginn,cantino/huginn,gautamkrishnar/huginn,eugenesvk/huginn,breandan/huginn,ashmckenzie/huginn,strugee/huginn,mathias/huginn,Ishfal/huginn,strugee/huginn,younata/huginn,cpretzer/huginn,TildeWill/huginn,huginn/huginn,albertsun/huginn,mathias/huginn,albertsun/huginn,dnjo/huginn-spotify-linker,virtadpt/huginn,AdrianoCahete/huginn,dnjo/huginn,johnleeming/huginn,ahmadassaf/IFTTT-Plus,virtadpt/huginn,Aluxian/huginn,Aluxian/huginn,AdrianoCahete/huginn