Create composer.json
Fix phpunit version requirement
Specify lib/ directories to avoid conflicts

The lib/Mage directory exists in a base Magento install, so
you have to specify the directories that will get sym'd
Compiler/Test is a broken mapping
Remove more code/*/Test directories that don't exist
Replace tabs with spaces
Remove Connect from modman mapping
Add composer install instructions to readme
Add cache clear step to readme
Merge pull request #3 from kalenjordan/master

Create composer.json and fix a few modman problems