Split sync into install and update commands.
 Add deprecation information.
Add modules as positional arguments.
Add 'vendor list' command.
Add vendor outdated command.
Change syntax for vendor git commands.
Rename vendor category to group.
Recognize qualified module name.
Accept path as module arguments.
Add missing vendor specs.
New module finding rules used for vendor info.
Add finding modules by commit and branch names.
Add support for deprecated :category option.
Merge pull request #24 from 3ofcoins/feature/cli-rewrite

CLI rewrite and unification.