Merge pull request #2 from sstephenson/shebang-flag

Shebang -e flag
Move subcommands into libexec/
Use /usr/bin/env rather than /bin/bash
Copies bins into shims/ instead of symlinking

Fixes #6
Use $shim var
Merge pull request #4 from telemachus/env

Use /usr/bin/env rather than /bin/bash
Quote `$@`
Merge branch 'master' into cp-shim

Conflicts:
	bin/rbenv-shim
Merge pull request #9 from sstephenson/cp-shim

Copies bins into shims/ instead of symlinking
Merge branch 'master' into libexec

Conflicts:
	bin/rbenv
	libexec/rbenv-shim
Fix permissions on rehash
Merge branch 'master' into libexec
Consistent style
rbenv-path -> rbenv-prefix
Add --bare option to rbenv-versions
Add rbenv-whence to show you which versions of Ruby have a given command
Show which versions of Ruby have a command installed when rbenv-which fails
rbenv-whence requires a command argument
look for plugin scripts to extend functionality
Add support for RBENV_VERSION=system