Add packagist related badge, for fun

Signed-off-by: crynobone <crynobone@gmail.com>
Add LICENSE.md

Signed-off-by: crynobone <crynobone@gmail.com>
Add changelog link

Signed-off-by: crynobone <crynobone@gmail.com>
Merge branch '2.0'

Conflicts:
	README.md

Signed-off-by: crynobone <crynobone@gmail.com>