Refactored logic for brew command into protected methods
Removal of if statement, using ln_sf forces the creation of a symlink if one already exists
log_timestamp was being called twice and creating two different values - fixed
seperated rspec configuration from tagging logic
Case statement for symlinking, added notes about they whys
Add the requires back to the method, not happy about it, but necessary for now
Simplified ckit generate with a proper subcommand
Merge branch 'brew-refactor' of git://github.com/jwieringa/chemistrykit into jwieringa-brew-refactor

Conflicts:
	lib/chemistrykit/cli/generators.rb
Adding tmp directory to gitignore
Readded the new commmand since someone got a little code clippy. Wired up the assertion in the "new" test so it actually works. And made the tmp directory listing explicit.