Added initial dmdavis customizations

* Added modules/prompt/functions/prompt_dmdavis_setup (initially a sorin clone with virtualenv support)
* Replaced basic fortune with fortune | cowsay | lolcat and dates
* Enabled git, python, and homebrew modules to zpreztorc
* Added variables and PATH modifications to zshenv
* Added aliases and functions to zshrc
* Updated README.md
Added cd.. and cd... aliases to zshrc
Added fasd module to zpreztorc
Added actual hostname for home machine to zshrc
Moved Tools PATH definition to all Mac hosts
Added archive and spectrum to zpreztorc
Added OS detection and OS-specific module loading to zpreztorc
Changed homebrew module's brewu alias from upgrade to update
Added Ubuntu module load to zpreztorc
Added nn alias to zshrc
Changed Tools PATH modification to any OS with a /Users/dale/Tools folder
Added work aliases for Fedora systems
Added user@hostname to PROMPT in prompt_dmdavis_setup
Added stgc alias to zshrc
Added stgp alias and updated rsab alias in runcoms/zshrc
Move tls alias to all platforms
Added misc Ubuntu aliases
Added upzpr alias for updating ~/.zprezto
Updated hig alias to 'history 1'
Added prdc0, prdc1, and prdc2 aliases