Removing -q and -m as grep args.

Any instances using -q have been redirected to /dev/null.
Any instances using -m1 now use l or are piped into head -n1.
Fixing ? not being recognized by using egrep.
Add deprecation warnings.
Add some error checking for `antigen` sugar
Return with error, when no sub-command given.
Merge branch 'patch-1' of github.com:GUIpsp/antigen
80|
Removed shebang line and added meta comments. Fix #56.
Add `Antigen:` prefix to error messages.

When in a script, it can be very hard to tell where an error is coming from,
just from the message. Adding this prefix should help a bit, by providing some
context to the error.
80| and refactor `! -z` to `-n`.
Merge pull request #51 from jmatth. Fix #51.
Suggest tabbing contents of heredoc

Conflicts:
	README.mkd
Add a note to README about heredoc's indentation.
Add tests for indented heredoc to bundles command.