more helpful exception message when a parameter in DI config is missing
Merge pull request #3 from VasekPurchart/di-missing-parameter

More helpful exception message when a parameter in DI config is missing
Neon: namespace changed to Nette\Neon
readme.md: added badge and link to Packagist

Conflicts:
	readme.md
opened 2.3-dev
tests: improved and added tests
ServiceDefinition::addSetup() accepts Statement
Neon: enhanced support for Neon entities, including entity chaining
Compiler: filterArguments() filters content of whole service definition
ContainerBuilder: refactoring of auto-disabling autowiring
ContainerBuilder: Statement::$entity can be Statement or pair [Statement, method] now
ContainerBuilder: better exception messages; check if services are instantiable moved to resolveEntityClass()
ContainerBuilder: refactoring
wip