Update installation instructions
The current instructions of DORiE installation state that correct set up require a recursive git download. With merge of !189 (merged) this is not true anymore and recursive download is optional and meant for developers.
Clarify this on the installation manual by removing step 7 or making it optional. Another possibility is to add a developer section with all the extra steps required to make an adequate environment for development.
How to test the implementation?
See #178 (closed)