Update README.md

Updated part about installing janus (no more patches but introduction of composer)
Updated janus and added required cache/logs dir config
Merge branch 'develop' of https://github.com/OpenConext/OpenConext-serviceregistry into develop
Removed component installer
Corrected cache dir to what was used earlier
Updated janus (without Ocramius Proxy manager and Zend libs)
Removed cache part of install
Removed cachee part of deploy
Fixed jquery, linked directly to components in vendor
Updated janus
Updated Composer binary
Fixed Janus to ~1.17
Merge branch 'develop' into feature/rest-api

* develop:
  Fixed Janus to ~1.17
  Updated Composer binary
  Updated janus
  Fixed jquery, linked directly to components in vendor
  Removed cachee part of deploy
  Removed cache part of install
  Updated janus (without Ocramius Proxy manager and Zend libs)
  Corrected cache dir to what was used earlier
  Removed component installer
  Updated janus and added required cache/logs dir config
  Update README.md

Conflicts:
	composer.json
	composer.lock